id:A065710 - OEIS Search Results

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Number of 2's in decimal expansion of 2^n.

+0
16

0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 2, 2, 0, 2, 0, 0, 1, 1, 0, 2, 1, 1, 1, 1, 2, 1, 0, 0, 0, 1, 1, 0, 1, 4, 0, 3, 1, 2, 0, 1, 1, 3, 3, 3, 1, 2, 0, 1, 2, 1, 2, 2, 2, 3, 1, 3, 0, 2, 2, 3, 3, 2, 2, 4, 4, 4, 0, 1, 2, 4, 3, 1, 3, 6, 2, 0, 2, 4, 4, 4, 2, 3, 6, 2, 1, 5, 1, 2, 4, 4, 1, 2, 6 (list; graph; listen)

	OFFSET	`0,19`
	COMMENT	`2^31 = 2147483648 so a(31) = 1`
	MATHEMATICA	`Table[ Count[ IntegerDigits[2^n], 2], {n, 0, 100} ]`
	CROSSREFS	`Cf. 0's A027870, 1's A065712, 3's A065714, 4's A065715, 5's A065716, 6's A065717, 7's A065718, 8's A065719, 9's A065744.` `Adjacent sequences: A065707 A065708 A065709 this_sequence A065711 A065712 A065713` `Sequence in context: A029583 A011289 A103272 this_sequence A089799 A073464 A050314`
	KEYWORD	`nonn,base`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 04 2001`
	EXTENSIONS	`More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Dec 07 2001`

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Last modified October 11 09:12 EDT 2008. Contains 144832 sequences.

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