A027099 a(n) = Sum_{0<=i<=i<=n} A027082(i, n+j).

1, 3, 9, 28, 83, 244, 713, 2075, 6029, 17512, 50891, 148037, 431151, 1257365, 3671731, 10735948, 31429745, 92116592, 270268647, 793741973, 2333221387, 6864280611, 20210115899, 59545932370, 175558633893, 517915132777

Offset

0,2

Links

Table of n, a(n) for n=0..25.

Crossrefs

Partial sums of A027098.

Sequence in context: A294958 A047134 A184698 * A292328 A027090 A033139

Adjacent sequences: A027096 A027097 A027098 * A027100 A027101 A027102

Keyword

nonn

Author

Clark Kimberling

Extensions

Title corrected by Sean A. Irvine, Oct 23 2019

Status

approved