A048809 Number of rooted trees with n nodes with every leaf at height 4.

1, 1, 2, 3, 6, 8, 15, 23, 39, 61, 102, 161, 265, 420, 682, 1087, 1753, 2790, 4476, 7120, 11376, 18075, 28785, 45666, 72530, 114882, 182040, 287878, 455231, 718755, 1134491, 1788461, 2818140, 4436000, 6978932, 10969695, 17232572, 27049320

Offset: 5

Author

Christian G. Bower, Apr 15 1999

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 5..1000
• N. J. A. Sloane, Transforms
• Index entries for sequences related to rooted trees

Crossrefs

Cf. A048808-A048816.

Column k=4 of A244925.

Formula

Euler transform of A048808 shifted right.