id:A090341 - OEIS Search Results

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Difference between the sums of the prime factors, including multiplicity, of n and those of n + 2.

+0
4

-3, -2, -2, -1, -2, -1, 1, -1, -5, 0, -2, -2, 5, 1, -9, 0, -2, -1, 9, -4, -13, 4, 13, -6, 1, 4, -20, 1, -2, 0, 17, -9, 2, 9, -25, -11, 21, 10, -25, -1, -2, -3, 32, -10, -36, 14, 33, -1, -6, -5, -33, 6, 37, -2, -6, -18, -37, 19, -2, -21, 48, 21, -5, -4, -49, -5, 41, 7, -45, 2, -2, -27, 60, 16, -5, 5, -61, 5, 67, -30, -71, 29, 61, -31, -10 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(24)=-6 because 24=2223, 26=213 and (2+2+2+3)-(2+13)=-6.`
	CROSSREFS	`Cf. A090340, A090342, A090343.` `Sequence in context: A016558 A154395 A152159 this_sequence A088435 A074976 A068448` `Adjacent sequences: A090338 A090339 A090340 this_sequence A090342 A090343 A090344`
	KEYWORD	`sign`
	AUTHOR	`Charles K. Layman (cklayman(AT)juno.com), Nov 25 2003`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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