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%I #21 Mar 21 2020 15:14:23
%S 1,4,49,1689,187392,46738368,20446754006,14021056991357,
%T 14141140657400321,20047531681346319557,38567298550226625579671,
%U 97861817259606311572409609,319914449561753621623849929222,1320949150506412557504787822889933,6773751604973857152218372443743552754
%N Number of isomorphism classes of connected 5-regular loopless multigraphs of order 2n.
%C Initial terms computed using software at http://users.cecs.anu.edu.au/~bdm/nauty/
%H Brendan McKay and Adolfo Piperno, <a href="http://pallini.di.uniroma1.it">Nauty and Traces</a>
%F Inverse Euler transform of A129420. - _Andrew Howroyd_, Mar 17 2020
%o (nauty/bash) geng -c -d1 $[2*$n] -q | multig -r5 -u # _Natan Arie Consigli_, Dec 20 2019
%Y Column k=5 of A328682.
%Y Cf. A129420, A129430, A000421, A129417, A129421, A129423, A129425, A328682.
%K nonn
%O 1,2
%A _Brendan McKay_, Apr 15 2007
%E a(8)-a(15) from _Andrew Howroyd_, Mar 21 2020