A232218 Arises from color-symmetrized counting of tensor invariants.

1, 2, 4, 12, 27, 103, 391, 1383, 6260, 32704, 149045, 812696, 5034682, 27895385, 173642918, 1221049609, 7859267162, 54735567331, 426299653269, 3100614554854, 23801458978807, 202181105885405, 1629802507466471, 13634143960693703, 124940706768934047

Offset

1,2

Comments

See Geloun-Ramgoolam (2013), Section 5.2 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

Geloun, Joseph Ben; Ramgoolam, Sanjaye Tensor models, Kronecker coefficients and permutation centralizer algebras. J. High Energy Phys. 2017, No. 11, Paper No. 92, 75 p. (2017).

Crossrefs

Sequence in context: A148172 A148173 A148174 * A292065 A193893 A096581

Adjacent sequences: A232215 A232216 A232217 * A232219 A232220 A232221

Keyword

nonn

Author

N. J. A. Sloane, Nov 22 2013

Extensions

a(14)-a(25) from Hiroaki Yamanouchi, Mar 13 2015

Status

approved