A101460 Number of connected antisymmetric relations on n unlabeled nodes.

1, 2, 4, 32, 467, 15726, 1283648, 266995482, 145658273814, 212067643326874, 834200554714504905, 8952922576975709358534, 264287923205519914989471726, 21606715274151098406493353524694, 4921011141817073607674347572008576367

Offset

0,2

Links

Andrew Howroyd, Table of n, a(n) for n = 0..50

Formula

Inverse Euler transform of A083670. - Andrew Howroyd, Oct 24 2019

Crossrefs

Cf. A083670, A086345, A001174.

Sequence in context: A009110 A225170 A134958 * A304862 A118992 A012509

Adjacent sequences: A101457 A101458 A101459 * A101461 A101462 A101463

Keyword

nonn

Author

Vladeta Jovovic, Jan 20 2005

Status

approved