OFFSET
9,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 9..10000
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, 6, -6, -11, 11, 16, -16, 6, -6, -28, 28, 14, -14, 0, 0, -14, 14, 28, -28, -6, 6, -16, 16, 11, -11, -6, 6, -1, 1, 8, -8, -3, 3, -2, 2, 1, -1).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Jul 09 2019
STATUS
approved