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# Index to OEIS: Section He

# 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

** Heinz numbers, sequences related to : **
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 ]