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A326508
Number of (binary) max-heaps on n elements from the set {0,1} containing exactly seven 0's.
2
1, 1, 2, 5, 10, 18, 32, 54, 94, 140, 222, 329, 532, 708, 1060, 1432, 2175, 2691, 3878, 4905, 7110, 8398, 11740, 14150, 19788, 22622, 30826, 35845, 48712, 54376, 72472, 82016, 108845, 119317, 155962, 172861, 224834, 243018, 312232, 340486, 435210, 465184
OFFSET
7,3
LINKS
Eric Weisstein's World of Mathematics, Heap
Wikipedia, Binary heap
Index entries for linear recurrences with constant coefficients, signature (1, 2, -2, 3, -3, -8, 8, -1, 1, 10, -10, -5, 5, 0, 0, 5, -5, -10, 10, 1, -1, 8, -8, -3, 3, -2, 2, 1, -1).
CROSSREFS
Column k=7 of A309049.
Sequence in context: A185721 A304796 A103577 * A079006 A001936 A246712
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Jul 09 2019
STATUS
approved