A124862 - OEIS

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A124862

a(n)=J(2n+1)*C(2n,n), J(n)=A001045(n).

1

1, 6, 66, 860, 11970, 172116, 2523444, 37487736, 562303170, 8496977060, 129153866556, 1972531074696, 30245473774516, 465314970745800, 7179145222818600, 111037445957810160, 1721080411744977090

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OFFSET

0,2

COMMENTS

Central coefficients of number triangle A124860.

LINKS

Table of n, a(n) for n=0..16.

CROSSREFS

Sequence in context: A267141 A004355 A282046 * A130977 A191096 A151832

Adjacent sequences: A124859 A124860 A124861 * A124863 A124864 A124865

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Nov 10 2006

STATUS

approved