login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A245559 Triangle read by rows: entries on or below the main diagonal in A245558. 4
1, 1, 1, 1, 2, 3, 1, 2, 5, 8, 1, 3, 7, 14, 25, 1, 3, 9, 20, 42, 75, 1, 4, 12, 30, 66, 132, 245, 1, 4, 15, 40, 99, 212, 429, 800, 1, 5, 18, 55, 143, 333, 715, 1430, 2700, 1, 5, 22, 70, 200, 497, 1144, 2424, 4862, 9225, 1, 6, 26, 91, 273, 728, 1768, 3978, 8398, 16796, 32065, 1, 6, 30, 112, 364, 1026, 2652, 6288, 13995, 29372, 58786, 112632 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

See A245558 for identification of other sequences occurring in this triangle.

REFERENCES

Elashvili, A.; Jibladze, M.; Hermite reciprocity for the regular representations of cyclic groups. Indag. Math. (N.S.) 9 (1998), no. 2, 233--238. MR1691428 (2000c:13006).

Elashvili, A.; Jibladze, M.; Pataraia, D. Combinatorics of necklaces and "Hermite reciprocity''. J. Algebraic Combin. 10 (1999), no. 2, 173--188. MR1719140 (2000j:05009). See p. 174.

LINKS

Table of n, a(n) for n=1..78.

EXAMPLE

Triangle begins:

1,

1, 1,

1, 2, 3,

1, 2, 5, 8,

1, 3, 7, 14, 25,

1, 3, 9, 20, 42, 75,

1, 4, 12, 30, 66, 132, 245,

1, 4, 15, 40, 99, 212, 429, 800,

1, 5, 18, 55, 143, 333, 715, 1430, 2700,

1, 5, 22, 70, 200, 497, 1144, 2424, 4862, 9225,

1, 6, 26, 91, 273, 728, 1768, 3978, 8398, 16796, 32065,

1, 6, 30, 112, 364, 1026, 2652, 6288, 13995, 29372, 58786, 112632

...

CROSSREFS

Cf. A245558.

Sequence in context: A053452 A023986 A109202 * A117488 A256910 A181176

Adjacent sequences:  A245556 A245557 A245558 * A245560 A245561 A245562

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Aug 07 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified July 23 08:59 EDT 2017. Contains 289686 sequences.