%I #8 Mar 17 2020 21:34:13

%S 0,1,1,7,16,128,955,13467,253373,6466074,205749149,7943313377,

%T 363853255012,19485170158346,1205488841884007,85308028236495340,

%U 6846462326434510551,618498122199399056707,62478078728492272712838,7015617595855429187696753

%N Number of isomorphism classes of 6-regular loopless multigraphs of order n.

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

%F Euler transform of A129421. - _Andrew Howroyd_, Mar 14 2020

%Y Column k=6 of A333330.

%Y Cf. A129421, A129433, A129416, A129418, A129420, A129424, A129426.

%K nonn

%O 1,4

%A _Brendan McKay_, Apr 15 2007

%E a(1)=0 prepended and a(14)-a(20) from _Andrew Howroyd_, Mar 17 2020