A047111 Sum{T(i,n-i): i=0,1,...,n}, array T as in A047110.

1, 2, 3, 6, 10, 20, 40, 71, 142, 260, 520, 1040, 1936, 3872, 7330, 14660, 29320, 55874, 111748, 215252, 430504, 861008, 1663662, 3327324, 6476960, 12953920, 25907840, 50511295, 101022590, 198016168, 396032336, 792064672, 1553798279

Offset

0,2

Links

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

Crossrefs

Sequence in context: A228835 A052843 A120707 * A106741 A068991 A187491

Adjacent sequences: A047108 A047109 A047110 * A047112 A047113 A047114

Keyword

nonn

Author

Clark Kimberling

Status

approved