id:A051195 - OEIS Search Results

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T(2n+2,n), array T as in A050186; a count of aperiodic binary words.

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0, 4, 12, 56, 200, 792, 2968, 11440, 43632, 167960, 646184, 2496144, 9655984, 37442160, 145416240, 565722720, 2203937120, 8597496600, 33577908232, 131282408400, 513791254704, 2012616400080, 7890369761872, 30957699535776 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`C(2n+2, n)-[n even]*C(n+1, n/2). - R. Stephan, Mar 19 2004`
	CROSSREFS	`Sequence in context: A092576 A149420 A149421 this_sequence A149422 A149423 A124004` `Adjacent sequences: A051192 A051193 A051194 this_sequence A051196 A051197 A051198`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research