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A026292 a(n) = T(2n,n), where T is the array in A026268. 0
1, 1, 5, 27, 145, 796, 4438, 25034, 142479, 816620, 4706977, 27256963, 158450461, 924129535, 5404960900, 31689099660, 186188338689, 1096001511849, 6462416487070, 38161656273410, 225653893420214, 1335936968552131, 7917871096128978, 46975164555309282, 278951672249192025 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..24.

CROSSREFS

Sequence in context: A052225 A293295 A015535 * A100193 A158869 A162557

Adjacent sequences:  A026289 A026290 A026291 * A026293 A026294 A026295

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

Corrected and extended by Sean A. Irvine, Sep 24 2019

STATUS

approved

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Last modified October 17 06:08 EDT 2019. Contains 328106 sequences. (Running on oeis4.)