A027118 a(n) = A027113(n, 2n).

1, 2, 3, 7, 16, 39, 98, 252, 659, 1747, 4682, 12662, 34505, 94644, 261069, 723707, 2014952, 5631875, 15796210, 44444302, 125405217, 354765866, 1006003375, 2858939669, 8141135778, 23225997936, 66376634429, 190000938785

Offset

0,2

Links

Table of n, a(n) for n=0..27.

Crossrefs

Sequence in context: A081207 A353580 A334398 * A114582 A352816 A107387

Adjacent sequences: A027115 A027116 A027117 * A027119 A027120 A027121

Keyword

nonn

Author

Clark Kimberling

Status

approved