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A026663 T(2n-1,n-1), T given by A026659. 0
1, 4, 13, 59, 205, 973, 3479, 16882, 61319, 301486, 1105973, 5485128, 20259303, 101097960, 375265833, 1881279267, 7009601253, 35265787861, 131791097063, 664934132269, 2490886179629, 12596544495403, 47280882141059, 239562157252595 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..24.

CROSSREFS

Sequence in context: A006798 A158267 A219572 * A149486 A317891 A115455

Adjacent sequences:  A026660 A026661 A026662 * A026664 A026665 A026666

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 31 08:46 EDT 2020. Contains 338101 sequences. (Running on oeis4.)