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A232207 Arises from color-symmetrized counting of tensor invariants. 2
1, 1, 2, 4, 5, 13, 29, 48, 114, 301, 579, 1462, 4198, 9295, 24184, 73489, 179879, 488616, 1540939, 4086226, 11540851, 37515163, 106101932, 311122047, 1037973223, 3097496100, 9407708340, 32130072122, 100356356885, 314999307749, 1099302983248, 3571869566808 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

See Geloun-Ramgoolam, Section 5.1 and Appendix B for precise definition and Mathematica code.

LINKS

Hiroaki Yamanouchi, Table of n, a(n) for n = 1..60

J. B. Geloun, S. Ramgoolam, Counting Tensor Model Observables and Branched Covers of the 2-Sphere, arXiv preprint arXiv:1307.6490, 2013

Hiroaki Yamanouchi, Python code

CROSSREFS

a(n) * n! gives A239838(n). - Alois P. Heinz, Jul 23 2014

Sequence in context: A289491 A102992 A273097 * A136563 A127077 A104549

Adjacent sequences:  A232204 A232205 A232206 * A232208 A232209 A232210

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 21 2013

EXTENSIONS

a(14)-a(32) from Hiroaki Yamanouchi, Mar 12 2015

STATUS

approved

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Last modified April 6 15:41 EDT 2020. Contains 333276 sequences. (Running on oeis4.)