A026574 T(2n,n), T given by A026568.

1, 1, 7, 19, 103, 341, 1809, 6336, 33899, 121483, 656199, 2381512, 12957809, 47419503, 259395664, 954961034, 5245001951, 19397198595, 106871608053

Offset

0,3

Links

Table of n, a(n) for n=0..18.

Crossrefs

Sequence in context: A088883 A262186 A346513 * A351858 A240150 A091149

Adjacent sequences: A026571 A026572 A026573 * A026575 A026576 A026577

Keyword

nonn

Author

Clark Kimberling

Status

approved