id:A042971 - OEIS Search Results

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(C(2n,n)/2 -(2^(n-1) +mod(n+1,2)C( n-1, n/2-1)))/2.

+0
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0, 0, 3, 12, 55, 210, 826, 3136, 12027, 45870, 175846, 674784, 2598102, 10024196, 38771188, 150250496, 583368787, 2268706134, 8836184878, 34461323872, 134563944322, 526023515996, 2058355584748, 8061896050432 (list; graph; listen)

	OFFSET	`0,3`
	MATHEMATICA	`(Table[ Binomial[ 2n, n ]/2 -(2^(n-1) +Mod[ n+1, 2 ]Binomial[ n-1, n/2-1 ]), {n, 10} ])/2`
	CROSSREFS	`Adjacent sequences: A042968 A042969 A042970 this_sequence A042972 A042973 A042974` `Sequence in context: A006026 A107264 A052673 this_sequence A024038 A007199 A001764`
	KEYWORD	`nonn`
	AUTHOR	`Wouter Meeussen (wouter.meeussen(AT)pandora.be)`

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

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