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A024736
s(n+3)/2, where s is A024735.
0
1, 2, 4, 9, 20, 44, 97, 230, 540, 1257, 2920, 7128, 17225, 41276, 98848, 244857, 602368, 1472564, 3594009, 9001188, 22402820, 55447385, 137104808, 345794100, 868000657, 2169191678, 5413976096, 13735048385, 34694002916, 87290093640, 219428919825
OFFSET
1,2
CROSSREFS
Sequence in context: A350325 A141016 A008998 * A024562 A087219 A214952
KEYWORD
nonn
STATUS
approved