A329055 Number of unlabeled bicolored acyclic graphs with n nodes of each color.

1, 2, 6, 21, 82, 356, 1690, 8731, 48213, 281885, 1724817, 10955956, 71747613, 481927039, 3306721747, 23103546417, 163954719933, 1179368199427, 8584854507319, 63150696347462, 468906907743356, 3511055861792836, 26489459993078577, 201226384388401603

Offset

0,2

Comments

The two color classes are not interchangeable. Adjacent nodes cannot have the same color.

Links

Andrew Howroyd, Table of n, a(n) for n = 0..100

Crossrefs

Main diagonal of A329052.

Sequence in context: A281784 A032347 A032346 * A148495 A150221 A058866

Adjacent sequences: A329052 A329053 A329054 * A329056 A329057 A329058

Keyword

nonn

Author

Andrew Howroyd, Nov 02 2019

Status

approved