id:A054868 - OEIS Search Results

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Sum of bits of sum of bits of n.

+0
2

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; listen)

	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 this_sequence A065081 A025909 A025899` `Adjacent sequences: A054865 A054866 A054867 this_sequence A054869 A054870 A054871`
	KEYWORD	`nonn`
	AUTHOR	`Jeffrey Shallit (shallit(AT)uwaterloo.ca), May 15 2000`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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