A245144 Number of n-node unlabeled rooted trees with thickening limbs and root outdegree (branching factor) 4.

1, 0, 0, 0, 1, 1, 1, 1, 3, 3, 5, 5, 11, 12, 19, 24, 41, 51, 78, 101, 163, 215, 320, 431, 661, 908, 1333, 1846, 2745, 3847, 5630, 7913, 11620, 16481, 23991, 34134, 49782, 71196, 103416, 148178, 215511, 309881, 449941, 647868, 941279, 1358857, 1973315, 2851880

Offset

5,9

Links

Alois P. Heinz, Table of n, a(n) for n = 5..150

Crossrefs

Column k=4 of A245151.

Sequence in context: A077980 A286759 A146245 * A279021 A339555 A213029

Adjacent sequences: A245141 A245142 A245143 * A245145 A245146 A245147

Keyword

nonn

Author

Alois P. Heinz, Jul 12 2014

Status

approved