A036422 Number of ternary rooted trees with n nodes and height exactly 7.

0, 0, 0, 0, 0, 0, 0, 1, 6, 26, 88, 267, 743, 1968, 5006, 12394, 29984, 71289, 166927, 386042, 882887, 1999964, 4491226, 10008151, 22144282, 48681992, 106384313, 231200051, 499868227, 1075542674, 2303703530, 4913213715, 10436198873

Offset: 0

Author

N. J. A. Sloane, Eric Rains (rains(AT)caltech.edu)

Keywords

• nonn
• fini
• full

Links

• Sean A. Irvine, Table of n, a(n) for n = 0..1093
• Index entries for sequences related to rooted trees

Crossrefs

Cf. A036370, A036437.

Formula

a(n) = A036375(n) - A036374(n). - Sean A. Irvine, Oct 31 2020