id:A079635 - OEIS Search Results

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Sum of (2 - p mod 4) for all prime factors p of n (with repetition).

+0
1

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

	OFFSET	`1,9`
	COMMENT	`a(n) = A046080(n) - A065339(n).`
	EXAMPLE	`a(55) = a(5*11) = (2 - 5 mod 4)+(2 - 11 mod 4) = (2-1)+(2-3) = (1)+(-1) = 0.`
	CROSSREFS	`Sequence in context: A056978 A037819 A090405 this_sequence A037909 A000164 A157746` `Adjacent sequences: A079632 A079633 A079634 this_sequence A079636 A079637 A079638`
	KEYWORD	`sign`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 30 2003`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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