A054868 - OEIS

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A054868

Sum of bits of sum of bits of n.

0, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 1, 1, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 2, 2, 1, 1, 1, 2, 1, 2, 2, 1, 1, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 2, 2, 2, 1, 2, 2 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,8`
	LINKS	`Index entries for sequences related to binary expansion of n` `Michael Gilleland, Some Self-Similar Integer Sequences`
	EXAMPLE	`a(127) = 3 since 127 in base 2 is 1111111, whose sum of bits is 7 and 7 in base 2 is 111, whose sum of bits is 3`
	CROSSREFS	`A000120(A000120(n)).` `Sequence in context: A156775 A064693 A072085 * A065081 A196942 A184304` `Adjacent sequences: A054865 A054866 A054867 * A054869 A054870 A054871`
	KEYWORD	`nonn`
	AUTHOR	`Jeffrey Shallit (shallit(AT)uwaterloo.ca), May 15 2000`

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Last modified February 15 11:25 EST 2012. Contains 205777 sequences.