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# Index to OEIS: Section He

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# Index to OEIS: Section He

- This is a section of the Index to the
**OEIS®**. - For further information see the main
**Index to OEIS**page. - Please read Index: Instructions For Updating Index to OEIS before making changes to this page.
- If you did not find what you were looking for in this Index, you can always search the database for a particular word or phrase.
- Full list of sections:

[
Aa |
Ab |
Al |
Am |
Ap |
Ar |
Ba |
Be |
Bi |
Bl |
Bo |
Br |
Ca |
Ce |
Ch |
Cl |
Coa |
Coi |
Com |
Con |
Cor |
Cu |
Cy |
Da |
De |
Di |
Do |
Ea |
Ed |
El |
Eu |
Fa |
Fe |
Fi |
Fo |
Fu |
Ga |
Ge |
Go |
Gra |
Gre |
Ha |
**He** |
Ho |
Ia |
In |
J |
K |
La |
Lc |
Li |
Lo |
Lu |
M |
Mag |
Map |
Mat |
Me |
Mo |
Mu |
N |
Na |
Ne |
Ni |
No |
Nu |
O |
Pac |
Par |
Pas |
Pea |
Per |
Ph |
Poi |
Pol |
Pos |
Pow |
Pra |
Pri |
Pro |
Ps |
Qua |
Que |
Ra |
Rea |
Rel |
Res |
Ro |
Ru |
Sa |
Se |
Si |
Sk |
So |
Sp |
Sq |
St |
Su |
Sw |
Ta |
Te |
Th |
To |
Tra |
Tri |
Tu |
U |
V |
Wa |
We |
Wi |
X |
Y |
Z |
1 |
2 |
3 |
4
]

** Heawood conjecture, sequences related to : **

- Heawood conjecture: A000934*

Hebrew: A0A027684

Hebrew: see also Index entries for sequences related to number of letters in n

Heegner numbers: A003173

hendecagon is spelled 11-gon in the OEIS

heptagonal numbers: A000566*

heptagonal pyramidal numbers: A002413*

Hermite constant: A007361*/A007362*

** Hermite polynomials, sequences related to : **

- Hermite polynomials, A060821*
- Hermite polynomials, diagonals, A001816
- Hermite polynomials, discriminant, A054374
- Hermite polynomials, inverse coefficients, A001814, A047974, A067147*
- Hermite polynomials, resultants, A054373
- Hermite polynomials, row sums: A000898, A062267*
- Hermite polynomials, unitary, A066325*
- Hermite polynomials: see also A000321, A025165

Hertzsprung's problem: A002464*

hex numbers: A003215*, A006062, A006244, A006051

** hexaflexagons, sequences related to : **

hexaflexagrams: see hexaflexagons

** hexagonal , sequences related to : **

- hexagonal close packing: see h.c.p
- hexagonal lattice: see A2 lattice
- hexagonal numbers: A000384*, A003215* (centered)
- Hexagonal prism:: A005914, A005915
- hexagonal pyramidal numbers: A002412

Hexanacci numbers:: A001592, A000383

** hierarchies, sequences related to : **

- hierarchies: A075729*, A000670, A075744, A075900, A075756, A000629, A075792
- hierarchies: see also orders

highest common factor (hcf) is written as GCD (greatest common divisor) in the OEIS

highly abundant numbers: A002093*

highly composite numbers: A002182*, A002473*

highly composite numbers: see also A000705, A002201, A002498, A002497, A002037, A117825

highly powerful numbers, see also powerful numbers

highly powerful numbers: A005934*

Hilbert series: see Molien series

Hindi: see also Index entries for sequences related to number of letters in n

- This is a section of the Index to the
**OEIS®**. - For further information see the main
**Index to OEIS**page. - Please read Index: Instructions For Updating Index to OEIS before making changes to this page.
- If you did not find what you were looking for in this Index, you can always search the database for a particular word or phrase.
- Full list of sections:

[
Aa |
Ab |
Al |
Am |
Ap |
Ar |
Ba |
Be |
Bi |
Bl |
Bo |
Br |
Ca |
Ce |
Ch |
Cl |
Coa |
Coi |
Com |
Con |
Cor |
Cu |
Cy |
Da |
De |
Di |
Do |
Ea |
Ed |
El |
Eu |
Fa |
Fe |
Fi |
Fo |
Fu |
Ga |
Ge |
Go |
Gra |
Gre |
Ha |
**He** |
Ho |
Ia |
In |
J |
K |
La |
Lc |
Li |
Lo |
Lu |
M |
Mag |
Map |
Mat |
Me |
Mo |
Mu |
N |
Na |
Ne |
Ni |
No |
Nu |
O |
Pac |
Par |
Pas |
Pea |
Per |
Ph |
Poi |
Pol |
Pos |
Pow |
Pra |
Pri |
Pro |
Ps |
Qua |
Que |
Ra |
Rea |
Rel |
Res |
Ro |
Ru |
Sa |
Se |
Si |
Sk |
So |
Sp |
Sq |
St |
Su |
Sw |
Ta |
Te |
Th |
To |
Tra |
Tri |
Tu |
U |
V |
Wa |
We |
Wi |
X |
Y |
Z |
1 |
2 |
3 |
4
]