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A026158 a(n) = T(3n,n), where T is the array in A026148. 0
1, 2, 16, 120, 946, 7644, 62831, 522784, 4389779, 37123554, 315735122, 2697813440, 23140821753, 199142458570, 1718554831623, 14866697304316, 128879838356309, 1119350439620210, 9737942597361615, 84842252277338304, 740178198190767003, 6465231396756806046 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..21.

CROSSREFS

Sequence in context: A086854 A258683 A026129 * A025185 A090672 A200820

Adjacent sequences:  A026155 A026156 A026157 * A026159 A026160 A026161

KEYWORD

nonn

AUTHOR

Clark Kimberling

EXTENSIONS

More terms from Sean A. Irvine, Sep 18 2019

STATUS

approved

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Last modified September 26 20:36 EDT 2020. Contains 337374 sequences. (Running on oeis4.)