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A072666 Numbers n such that prime(n) + prime(n+1) = prime(k) + 1 for some k. 2
2, 3, 4, 5, 6, 8, 10, 11, 13, 14, 18, 19, 21, 25, 30, 31, 36, 41, 43, 44, 46, 47, 48, 50, 52, 53, 58, 59, 60, 62, 63, 66, 68, 70, 73, 74, 75, 78, 79, 80, 81, 83, 85, 90, 93, 99, 100, 101, 106, 112, 114, 116, 117, 120, 124, 126, 127, 129, 130, 131, 132, 137, 138, 140, 145, 147, 149 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

MATHEMATICA

Select[Range[200], PrimeQ[Prime[#]+Prime[#+1]-1] &] [from Harvey P. Dale, Dec. 16, 2010]

CROSSREFS

Cf. A072667, A072669.

Sequence in context: A087721 A140642 A188936 * A075471 A193687 A000933

Adjacent sequences:  A072663 A072664 A072665 * A072667 A072668 A072669

KEYWORD

nonn

AUTHOR

Herman H. Rosenfeld (herm3(AT)pacbell.net), Aug 12 2002

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Last modified February 13 15:49 EST 2012. Contains 205521 sequences.