id:A156542 - OEIS Search Results

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Number of distinct Sophie Germain prime factors of n.

+0
6

0, 1, 1, 1, 1, 2, 0, 1, 1, 2, 1, 2, 0, 1, 2, 1, 0, 2, 0, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 3, 0, 1, 2, 1, 1, 2, 0, 1, 1, 2, 1, 2, 0, 2, 2, 2, 0, 2, 0, 2, 1, 1, 1, 2, 2, 1, 1, 2, 0, 3, 0, 1, 1, 1, 1, 3, 0, 1, 2, 2, 0, 2, 0, 1, 2, 1, 1, 2, 0, 2, 1, 2, 1, 2, 1, 1, 2, 2, 1, 3, 0, 2, 1, 1, 1, 2, 0, 1, 2, 2, 0, 2, 0, 1, 2 (list; graph; listen)

	OFFSET	`1,6`
	COMMENT	`a(n) <= A001221(n));` `a(A156541(n)) = A001221(A156541(n)); a(A156543(n)) = 0;` `a(A005384(n)) = 1; a(A053176(n)) = 0.`
	LINKS	`R. Zumkeller, Table of n, a(n) for n = 1..10000`
	CROSSREFS	`Adjacent sequences: A156539 A156540 A156541 this_sequence A156543 A156544 A156545` `Sequence in context: A025911 A060184 A055639 this_sequence A066360 A061358 A025866`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 10 2009`

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Last modified November 9 12:23 EST 2009. Contains 166233 sequences.

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