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A026160 a(n) = T(2n,n-1), where T is the array in A026148. 0
1, 3, 16, 84, 459, 2552, 14377, 81768, 468468, 2699596, 15630384, 90853864, 529850815, 3098789865, 18167417169, 106738859744, 628304239266, 3704621197662, 21875951368671, 129352256646948, 765788776646355, 4538617746853905, 26926250088179529, 159892875661323312 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

CROSSREFS

Cf. A026148.

Sequence in context: A069429 A275402 A026131 * A025187 A151328 A277923

Adjacent sequences:  A026157 A026158 A026159 * A026161 A026162 A026163

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Sep 18 2019

STATUS

approved

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Last modified November 26 09:38 EST 2020. Contains 338639 sequences. (Running on oeis4.)