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A026990
a(n) = Sum_{k=0..n} (k+1) * A026681(n, k).
0
1, 3, 10, 30, 78, 189, 480, 1242, 3030, 7084, 17112, 42146, 99792, 229065, 540544, 1298851, 3025386, 6871084, 15993500, 37857267, 87275980, 196867143, 454118616, 1064055225, 2435780334, 5468505723, 12533827796, 29153115186
OFFSET
0,2
CROSSREFS
Sequence in context: A006484 A144007 A026960 * A254822 A027256 A332360
KEYWORD
nonn
STATUS
approved