A026723 a(n) = Sum{T(i,j)}, 0<=i<=n, 0<=j<=i, T given by A026714.

1, 3, 8, 20, 49, 117, 280, 656, 1551, 3597, 8442, 19460, 45457, 104387, 243086, 556842, 1294027, 2959369, 6867428, 15687806, 36368875, 83015759, 192321728, 438755532, 1015963203, 2316887259, 5363009706, 12226893148, 28295070847

Offset

0,2

Links

Table of n, a(n) for n=0..28.

Crossrefs

Sequence in context: A360263 A018791 A306988 * A038746 A126876 A090757

Adjacent sequences: A026720 A026721 A026722 * A026724 A026725 A026726

Keyword

nonn

Author

Clark Kimberling

Status

approved