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A146534
4*C(2n,n)-3*0^n.
2
1, 8, 24, 80, 280, 1008, 3696, 13728, 51480, 194480, 739024, 2821728, 10816624, 41602400, 160466400, 620470080, 2404321560, 9334424880, 36300541200, 141381055200, 551386115280, 2153031497760
OFFSET
0,2
FORMULA
a(n)=Sum_{k, 0<=k<=n}A039599(n,k)*A010688(k).
KEYWORD
nonn
AUTHOR
Philippe Deléham, Oct 31 2008
EXTENSIONS
Corrected typo. - Philippe Deléham, Oct 31 2008
STATUS
approved