A361362 Number of bicolored cubic graphs on 2n unlabeled vertices.

1, 0, 5, 23, 262, 4775, 126026, 4315481, 177939133, 8486268015, 457398466292, 27442206452816, 1812456359735759, 130630783430897459, 10200930403740584232, 857888417749736680977, 77299388952584465682198, 7429004444540543143978901, 758559920648248499878180973, 82006219796827162656265186759, 9357477001574426557631620060473

Offset

0,3

Comments

Adjacent vertices may have the same color.

Links

Table of n, a(n) for n=0..20.

Formula

Euler transform of A361403.

Crossrefs

Row sums of A361361.

Cf. A361403 (connected).

Sequence in context: A156555 A361403 A116652 * A197936 A198029 A072104

Adjacent sequences: A361359 A361360 A361361 * A361363 A361364 A361365

Keyword

nonn

Author

Andrew Howroyd, Mar 10 2023

Status

approved