id:A081717 - OEIS Search Results

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Primes p[j] such that p[j]+j is composite.

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5, 11, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 67, 71, 73, 83, 97, 103, 107, 109, 113, 127, 137, 149, 151, 157, 163, 167, 173, 179, 191, 193, 197, 199, 211, 227, 229, 233, 239, 241, 251, 257, 263, 269, 271, 277, 281, 283, 293, 307, 311, 313, 331, 337, 347 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`127 is the 31st prime and 127+31=158 is composite.`
	MATHEMATICA	`Do[s=Prime[n]+n;` `If[ !PrimeQ[s], Print[Prime[n]]], {n, 1, 100}]`
	CROSSREFS	`Cf. A061067, A061068.` `Adjacent sequences: A081714 A081715 A081716 this_sequence A081718 A081719 A081720` `Sequence in context: A084037 A077130 A119754 this_sequence A096264 A088348 A084088`
	KEYWORD	`nonn`
	AUTHOR	`Labos E. (labos(AT)ana.sote.hu), Apr 02 2003`

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Last modified October 13 09:05 EDT 2008. Contains 145008 sequences.

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