A096869 - OEIS

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A096869

Difference between the n-th repunit and the next prime.

1, 2, 2, 6, 2, 8, 40, 6, 2, 10, 2, 38, 28, 12, 118, 12, 8, 20, 60, 20, 46, 78, 6, 2, 102, 272, 80, 246, 6, 80, 102, 36, 116, 10, 36, 10, 238, 32, 20, 6, 78, 412, 88, 426, 118, 172, 48, 58, 112, 8, 56, 430, 90, 136, 240, 30, 140, 232, 162, 40, 226, 48, 116, 60, 690, 146, 210 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n) = A096497(n) - A002275(n) = A096499(n) - A096870(n).`
	MATHEMATICA	`NextPrim[n_] := Block[{k = n + 1}, While[ !PrimeQ[k], k++ ]; k]; Table[ NextPrim[(10^n - 1)/9] - (10^n - 1)/\ 9, {n, 70}]`
	CROSSREFS	`Cf. A096870.` `Sequence in context: A028330 A071052 A193388 * A154009 A099985 A110765` `Adjacent sequences: A096866 A096867 A096868 * A096870 A096871 A096872`
	KEYWORD	`nonn`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 12 2004`

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Last modified February 17 08:34 EST 2012. Contains 205998 sequences.