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A329055 Number of unlabeled bicolored acyclic graphs with n nodes of each color. 3
1, 2, 6, 21, 82, 356, 1690, 8731, 48213, 281885, 1724817, 10955956, 71747613, 481927039, 3306721747, 23103546417, 163954719933, 1179368199427, 8584854507319, 63150696347462, 468906907743356, 3511055861792836, 26489459993078577, 201226384388401603 (list; graph; refs; listen; history; text; internal format)
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 A063689

Adjacent sequences:  A329052 A329053 A329054 * A329056 A329057 A329058

KEYWORD

nonn

AUTHOR

Andrew Howroyd, Nov 02 2019

STATUS

approved

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Last modified May 14 07:13 EDT 2021. Contains 343879 sequences. (Running on oeis4.)