A129436 Number of isomorphism classes of connected 8-regular multigraphs of order n, loops allowed.

1, 4, 17, 149, 1934, 44821, 1631629, 89057367, 6849428873, 713780361312, 97876276145119, 17259548258350637, 3840154740252625874, 1060662127742505706789, 358584059544008234423217, 146560585570176100774010071, 71630591614693085251230481320, 41456445821273701849195905028292

Offset: 1

Author

Brendan McKay, Apr 15 2007

Keywords

• nonn

Comments

Initial terms computed using software at http://users.cecs.anu.edu.au/~bdm/nauty/

Crossrefs

Column k=8 of A333397.

Cf. A129437, A129425, A005967, A085549, A129430, A129432, A129434.

Formula

Inverse Euler transform of A129437. - Andrew Howroyd, Mar 19 2020

Extensions

a(11)-a(18) added by Andrew Howroyd, Mar 21 2020