A273729 Number of n-ary heaps on n levels (i.e., of A023037(n) elements).

1, 1, 2, 7484400

Offset

0,3

Comments

a(5), a(6), a(7) have 1774, 31436, 625065 decimal digits, respectively.

Links

Alois P. Heinz, Table of n, a(n) for n = 0..4

Wikipedia, D-ary heap

Formula

a(n) = A273712(n,n).

Crossrefs

Main diagonal of A273712.

Cf. A023037.

Sequence in context: A352126 A157991 A233555 * A324440 A121390 A170997

Adjacent sequences: A273726 A273727 A273728 * A273730 A273731 A273732

Keyword

nonn

Author

Alois P. Heinz, May 28 2016

Status

approved