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A048120 a(n)=T(2n,n+1), where T is given by A048113. 0
0, 0, 2, 6, 24, 84, 312, 1140, 4248, 15852, 59688, 225624, 857424, 3270216, 12518472, 48062520, 185034360, 714038448, 2761343064, 10698992304, 41525207448, 161418403008, 628356425856, 2449152822168, 9557303840184 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..25.

CROSSREFS

Sequence in context: A189858 A189568 A002742 * A322198 A003759 A217527

Adjacent sequences:  A048117 A048118 A048119 * A048121 A048122 A048123

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 13 11:50 EDT 2021. Contains 343839 sequences. (Running on oeis4.)