A273729 - OEIS

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A273729

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

2

1, 1, 2, 7484400

(list; graph; refs; listen; history; text; internal format)

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.

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