A026717 T(2n,n-2), T given by A026714.

1, 9, 59, 346, 1931, 10513, 56478, 301128, 1598424, 8461783, 44720274, 236094725, 1245579365, 6568448233, 34627898410, 182517293169, 961887614156, 5068804722664, 26709150033769, 140733080850141, 741514434266253

Offset

2,2

Links

Table of n, a(n) for n=2..22.

Crossrefs

Cf. A026714.

Sequence in context: A280103 A174654 A027249 * A231228 A198847 A059356

Adjacent sequences: A026714 A026715 A026716 * A026718 A026719 A026720

Keyword

nonn

Author

Clark Kimberling

Status

approved