id:A135757 - OEIS Search Results

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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 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = C(n(n+1), n(n+1)/2).`
	PROGRAM	`(PARI) a(n)=binomial(n(n+1), n(n+1)/2)`
	CROSSREFS	`Cf. A135758.` `Sequence in context: A163594 A013148 A006547 this_sequence A158843 A008793 A015192` `Adjacent sequences: A135754 A135755 A135756 this_sequence A135758 A135759 A135760`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Dec 02 2007`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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