id:A055388 - OEIS Search Results

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Number of riffle shuffles of 2n cards required to return the deck to initial state.

+0
1

2, 2, 4, 6, 6, 10, 12, 4 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`The College Math. Journal, Volume 26, Number 3, page 225, May '95.`
	CROSSREFS	`Sequence in context: A005341 A137268 A008130 this_sequence A065457 A000784 A092991` `Adjacent sequences: A055385 A055386 A055387 this_sequence A055389 A055390 A055391`
	KEYWORD	`easy,nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 05 2000`
	EXTENSIONS	`Probably an incorrect version of A002326.`

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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.