A080378 - OEIS

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A080378

Residues mod 4 of the n-th difference between consecutive primes.

1, 2, 2, 0, 2, 0, 2, 0, 2, 2, 2, 0, 2, 0, 2, 2, 2, 2, 0, 2, 2, 0, 2, 0, 0, 2, 0, 2, 0, 2, 0, 2, 2, 2, 2, 2, 2, 0, 2, 2, 2, 2, 2, 0, 2, 0, 0, 0, 2, 0, 2, 2, 2, 2, 2, 2, 2, 2, 0, 2, 2, 2, 0, 2, 0, 2, 2, 2, 2, 0, 2, 0, 2, 2, 0, 2, 0, 0, 0, 2, 2, 2, 2, 2, 0, 2, 0, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0, 2, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n)=Mod[A001223(n), 4]`
	MATHEMATICA	`Table[Mod[Prime[w+1]-Prime[w], 4], {w, 1, 256}]`
	CROSSREFS	`Cf. A001223.` `Sequence in context: A142242 A050314 A122157 * A120439 A104624 A193863` `Adjacent sequences: A080375 A080376 A080377 * A080379 A080380 A080381`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Mar 04 2003`

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.