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A326511 Number of (binary) max-heaps on n elements from the set {0,1} containing exactly ten 0's. 2
1, 1, 2, 5, 13, 26, 47, 86, 151, 277, 460, 783, 1248, 2136, 3091, 4872, 7166, 11610, 15720, 23832, 32847, 50788, 64714, 94916, 124296, 185246, 226976, 324586, 407824, 589416, 699010, 977912, 1188567, 1674431, 1938526, 2661055, 3147865, 4338414, 4923481 (list; graph; refs; listen; history; text; internal format)
OFFSET

10,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 10..10000

Eric Weisstein's World of Mathematics, Heap

Wikipedia, Binary heap

MAPLE

b:= proc(n) option remember; series(`if`(n=0, 1, (g-> (f->

      x^n+b(f)*b(n-1-f))(min(g-1, n-g/2)))(2^ilog2(n))), x, 11)

    end:

a:= n-> coeff(b(n), x, 10):

seq(a(n), n=10..50);

CROSSREFS

Column k=10 of A309049.

Sequence in context: A289529 A087250 A065301 * A289463 A289579 A322593

Adjacent sequences:  A326508 A326509 A326510 * A326512 A326513 A326514

KEYWORD

nonn,easy

AUTHOR

Alois P. Heinz, Jul 09 2019

STATUS

approved

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Last modified February 19 22:34 EST 2020. Contains 332061 sequences. (Running on oeis4.)