id:A101336 - OEIS Search Results

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Alternating addition and subtraction of the residues of the primes less than the number.

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0, 0, 1, -1, -1, 1, 2, 0, 3, -4, -4, -2, -1, 4, 2, 0, 0, 2, 3, -4, 6, -7, -7, -5, -9, 3, 7, 13, 14, 10, 10, 9, 2, -16, -13, -11, -10, 7, 23, 16, 16, 25, 26, 13, 11, -14, -14, -12, -4, -10, -23, -11, -10, -9, -25, -20, 2, 29, 29, 26, 27, -6, 4, 2, 10, 0, 0, -18, -37, -36, -35, -34, -34, 2, 1, 19, 16, 31, 32, 25, 28, -15, -15, -6, -27, 15 (list; graph; listen)

	OFFSET	`1,7`
	COMMENT	`The amplitude and periodicity of fluctuations increase... for example a(813) through a(836) are all positive and a(914) through a(937) all are positive except for a(922).`
	EXAMPLE	`a(10) = -4 because 10 (mod 2) - 10 (mod 3) + 10 (mod 5) - 10 (mod 7) = 0-1+0-3`
	CROSSREFS	`Cf. A024934.` `Sequence in context: A013584 A137372 A066439 this_sequence A137218 A087819 A066246` `Adjacent sequences: A101333 A101334 A101335 this_sequence A101337 A101338 A101339`
	KEYWORD	`easy,sign`
	AUTHOR	`Gordon Robert Hamilton (hamiltonian(AT)shaw.ca), Dec 24 2004`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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