login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A232218 Arises from color-symmetrized counting of tensor invariants. 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

See Geloun-Ramgoolam, 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

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

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 16 03:52 EDT 2021. Contains 348035 sequences. (Running on oeis4.)