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A076810 Least k such that k*n^n +/- 1 are twin primes. 0
4, 1, 4, 57, 42, 3, 720, 243, 28, 57, 138, 63, 714, 1635, 602, 198, 666, 1328, 3390, 1047, 1372, 4980, 2796, 308, 60, 2883, 676, 1782, 16068, 130, 108, 16968, 466, 1920, 1986, 1710, 12840, 4545, 9628, 1707, 7098, 1890, 5520, 3042, 504, 4512, 13614 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

MATHEMATICA

nxt[n_]:=Module[{nn=n^n, k=1}, While[!PrimeQ[k nn+1]||!PrimeQ[k nn-1], k++]; k]; Array[nxt, 50] (* From Harvey P. Dale, June 30 2011 *)

CROSSREFS

Sequence in context: A033918 A136467 A079188 * A185373 A194127 A061642

Adjacent sequences:  A076807 A076808 A076809 * A076811 A076812 A076813

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Nov 18 2002

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Last modified February 17 23:58 EST 2012. Contains 206085 sequences.