A019311 - OEIS

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A019311

Number of words of length n (n >= 1) over a two-letter alphabet having a minimal period of size n-2.

0, 0, 2, 2, 6, 12, 28, 48, 106, 198, 414, 800, 1644, 3236, 6546 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	REFERENCES	`H. Harborth, Endliche 0-1-Folgen mit gleichen Teilbl\"ocken, J. f\"ur Reine Angewandte Math. 271 (1974), 139-154.`
	CROSSREFS	`Sequence in context: A173392 A035615 A115962 * A052994 A088219 A027375` `Adjacent sequences: A019308 A019309 A019310 * A019312 A019313 A019314`
	KEYWORD	`nonn`
	AUTHOR	`Jeffrey Shallit (shallit(AT)graceland.uwaterloo.ca)`

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Last modified February 15 03:59 EST 2012. Contains 205694 sequences.