A026292 a(n) = T(2n,n), where T is the array in A026268.

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

Offset

0,3

Links

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

Crossrefs

Sequence in context: A293295 A343208 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