A026721 T(n,0) + T(n,1) + ... + T(n,n), T given by A026714.

1, 2, 5, 12, 29, 68, 163, 376, 895, 2046, 4845, 11018, 25997, 58930, 138699, 313756, 737185, 1665342, 3908059, 8820378, 20681069, 46646884, 109305969, 246433804, 577207671, 1300924056, 3046122447, 6863883442, 16068177699

Offset

0,2

Links

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

Maple

A026721 := proc(n)
    add( A026714(n, k), k=0..n) ;
end proc:
seq(A026721(n), n=0..30) ; # R. J. Mathar, Oct 21 2019

Crossrefs

Sequence in context: A079864 A131045 A182555 * A094975 A067687 A291235

Adjacent sequences: A026718 A026719 A026720 * A026722 A026723 A026724

Keyword

nonn

Author

Clark Kimberling

Status

approved