id:A139329 - OEIS Search Results

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Number of permutation symmetries of the 0s in the binary expansion of n. Consider the symmetric group that permutes floor(lg(n)) elements acting on the 0s.

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2

1, 1, 1, 1, 2, 1, 1, 1, 6, 2, 2, 1, 2, 1, 1, 1, 24, 6, 6, 2, 6, 2 (list; graph; listen)

	OFFSET	`0,5`
	FORMULA	`a(n) = (# of 0s in the binary expansion of n)!`
	CROSSREFS	`Cf. A093659.` `Sequence in context: A060185 A129110 A112624 this_sequence A069777 A064992 A089759` `Adjacent sequences: A139326 A139327 A139328 this_sequence A139330 A139331 A139332`
	KEYWORD	`base,easy,nonn`
	AUTHOR	`Max Sills (maxwell.sills(AT)case.edu), Apr 13 2008`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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