A047121 Sum{T(i,n-i): i=0,1,...,n}, array T as in A047120.

1, 2, 3, 5, 9, 18, 36, 69, 134, 263, 526, 1052, 2085, 4143, 8250, 16500, 33000, 65851, 131484, 262668, 525336, 1050672, 2100045, 4198157, 8393603, 16787206, 33574412, 67136750, 134255332, 268484858, 536969716, 1073939432, 2147761687

Offset

0,2

Links

Table of n, a(n) for n=0..32.

Crossrefs

Sequence in context: A080091 A000602 A034790 * A363307 A182080 A259117

Adjacent sequences: A047118 A047119 A047120 * A047122 A047123 A047124

Keyword

nonn

Author

Clark Kimberling

Status

approved