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A108288
Main diagonal of table A060543; a(n) = C((n+1)^2-1, n*(n+1)).
2
1, 3, 28, 455, 10626, 324632, 12271512, 553270671, 28987537150, 1731030945644, 116068178638776, 8634941152058949, 705873715441872264, 62895036884524942320, 6067037854078498539696, 629921975126394617164575, 70043473196734767582082230
OFFSET
0,2
FORMULA
a(n) = A060545(n+1). - R. J. Mathar, Aug 24 2008
PROG
(PARI) a(n)=binomial((n+1)^2-1, n*(n+1))
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, May 31 2005
STATUS
approved