A027126 a(n) = A027113(n, 2n-8).

1, 2, 7, 24, 81, 274, 923, 3087, 10232, 33587, 109190, 351730, 1123465, 3561045, 11210036, 35073033, 109137568, 337969627, 1042129366, 3201226811, 9800475386, 29914121676, 91063951213, 276556071836, 838101477953

Offset

4,2

Links

Table of n, a(n) for n=4..28.

Crossrefs

Sequence in context: A215694 A027124 A038765 * A027128 A099463 A021000

Adjacent sequences: A027123 A027124 A027125 * A027127 A027128 A027129

Keyword

nonn

Author

Clark Kimberling

Status

approved