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A326509
Number of (binary) max-heaps on n elements from the set {0,1} containing exactly eight 0's.
2
1, 1, 2, 5, 11, 21, 37, 69, 109, 181, 287, 487, 695, 1079, 1547, 2451, 3194, 4742, 6321, 9522, 11736, 16858, 21262, 30782, 36420, 50928, 61596, 86402, 99282, 135682, 158874, 217130, 243959, 326783, 373076, 498819, 550809, 724803, 811051, 1064139, 1158863
OFFSET
8,3
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, 0, 0, 8, -8, -8, 8, 8, -8, 6, -6, -20, 20, 6, -6, 8, -8, -8, 8, 8, -8, 0, 0, -8, 8, 3, -3, 2, -2, -1, 1).
CROSSREFS
Column k=8 of A309049.
Sequence in context: A003522 A112805 A119970 * A082775 A023548 A144700
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Jul 09 2019
STATUS
approved