id:A144411 - OEIS Search Results

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Odd non-prime gaps adjusted to be {2,1,0,-1}: a(n)=A067970(n)/2-2.

+0
1

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

	OFFSET	`1,1`
	FORMULA	`a(n)=A067970(n)/2-2.`
	MATHEMATICA	`b = Flatten[Table[If[PrimeQ[2n + 1], {}, 2n + 1], {n, 0, 200}]]; c = Table[(b[[n + 1]] - b[[n]])/2 - 2, {n, 1, Length[b] - 1}]`
	CROSSREFS	`Sequence in context: A005590 A142598 A037800 this_sequence A138253 A085737 A005090` `Adjacent sequences: A144408 A144409 A144410 this_sequence A144412 A144413 A144414`
	KEYWORD	`uned,sign`
	AUTHOR	`Roger L. Bagula and Gary W. Adamson (rlbagulatftn(AT)yahoo.com), Sep 30 2008`

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

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