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

%I #9 Mar 21 2020 20:11:53

%S 1,4,17,149,1934,44821,1631629,89057367,6849428873,713780361312,

%T 97876276145119,17259548258350637,3840154740252625874,

%U 1060662127742505706789,358584059544008234423217,146560585570176100774010071,71630591614693085251230481320,41456445821273701849195905028292

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

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

%F Inverse Euler transform of A129437. - _Andrew Howroyd_, Mar 19 2020

%Y Column k=8 of A333397.

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

%K nonn

%O 1,2

%A _Brendan McKay_, Apr 15 2007

%E a(11)-a(18) added by _Andrew Howroyd_, Mar 21 2020