A027291 a(n) = Sum_{k=0..floor(n/2)+1} (k+1) * A026009(n, k).

1, 3, 8, 16, 39, 77, 179, 354, 799, 1584, 3504, 6960, 15174, 30183, 65085, 129598, 277071, 552140, 1172348, 2337624, 4935586, 9845978, 20691318, 41292196, 86432614, 172538352, 359934704, 718680768, 1494861996, 2985378027

Offset

0,2

Links

Table of n, a(n) for n=0..29.

Crossrefs

Sequence in context: A344509 A201250 A196373 * A048952 A079666 A193684

Adjacent sequences: A027288 A027289 A027290 * A027292 A027293 A027294

Keyword

nonn

Author

Clark Kimberling

Status

approved