A026895 T(2n,n+2), T given by A026780.

1, 7, 38, 191, 935, 4547, 22166, 108790, 538668, 2692996, 13594954, 69281309, 356222591, 1846781939, 9647229202, 50744420578, 268591503348, 1429730471552, 7649564591070, 41117462702680, 221938325574492, 1202501072716220

Offset

2,2

Links

Table of n, a(n) for n=2..23.

Crossrefs

Sequence in context: A026763 A217340 A037696 * A037605 A128726 A346395

Adjacent sequences: A026892 A026893 A026894 * A026896 A026897 A026898

Keyword

nonn

Author

Clark Kimberling

Status

approved