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A000840 Number of cubic bicolored graphs on n unlabeled nodes admitting an automorphism exchanging the colors. 4

%I

%S 0,0,1,1,2,5,12,31,90,285,938,3285,11983,45390,177803,718390,2986407,

%T 12749364,55802982,250068732,1145923828,5363795830,25620207380,

%U 124767647097,618983876918,3126035142910,16060182735947,83883575376862,445164927249466,2399098651337048

%N Number of cubic bicolored graphs on n unlabeled nodes admitting an automorphism exchanging the colors.

%Y Column k=3 of A333159.

%Y Cf. A000512, A000843, A004066, A008325.

%K nonn

%O 1,5

%A _Brendan McKay_ and Eric Rogoyski

%E a(11)-a(30) from _Andrew Howroyd_, Mar 10 2020

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Last modified April 19 13:00 EDT 2021. Contains 343114 sequences. (Running on oeis4.)