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A135757
Central binomial coefficients at triangular positions: a(n) =
A000984
(n(n+1)/2).
+0
2
1, 2, 20, 924, 184756, 155117520, 538257874440, 7648690600760440, 442512540276836779204, 103827421287553411369671120, 98527218530093856775578873054432
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Maintained by
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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.
AT&T Labs Research
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