id:A131381 - OEIS Search Results

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a(n)=binomial(2*n,n) mod (n+2)), with n>=1.

+0
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2, 2, 0, 4, 0, 4, 3, 0, 0, 4, 0, 0, 5, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 0, 0, 10, 0, 16, 11, 0, 0, 24, 0, 0, 26, 0, 0, 28, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 27, 0, 0, 28, 0, 0, 29, 0, 0, 60, 0, 0, 62, 0, 0, 64, 0, 0, 0, 0 (list; graph; listen)

	OFFSET	`0,1`
	COMMENT	`Contains large zones of zeros`
	EXAMPLE	`n=6 -> binomial(12,6) mod 8 -> 12!/(6!*6!) mod 8 -> 924 mod 8 -> 4`
	MAPLE	`P:=proc(n) local i, j; for i from 1 by 1 to n do j:=(binomial(2*i, i) mod (i+2)); print(j); od; end: P(200);`
	CROSSREFS	`Cf. A118114, A131382.` `Sequence in context: A090657 A108563 A138476 this_sequence A112080 A052176 A138092` `Adjacent sequences: A131378 A131379 A131380 this_sequence A131382 A131383 A131384`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paolo P. Lava & Giorgio Balzarotti (ppl(AT)spl.at), Jul 05 2007`

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Last modified December 17 19:39 EST 2009. Contains 170821 sequences.

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