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 A068653 Composite number such that every cyclic permutation (other than the number itself) gives a prime. 4
 14, 16, 20, 30, 32, 34, 35, 38, 50, 70, 74, 76, 91, 92, 95, 98, 110, 118, 119, 133, 170, 176, 194, 310, 316, 398, 710, 712, 715, 730, 731, 736, 772, 775, 778, 779, 790, 793, 794, 914, 935, 970, 973, 1118, 1130, 1195, 1312, 1336, 1370, 1774, 1937, 3110, 3112 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE 176 is a member as the two cyclic permutations other than the number itself 761 and 617 are primes. MATHEMATICA LiQ[n_] := Module[{s=0}, li1=IntegerDigits[n]; k=Length[li1]; t={li1}; Do[li1=RotateLeft[li1]; AppendTo[t, li1], {i, k-1}]; If[Length[Select[Table[FromDigits[p], {p, t}], PrimeQ]] == k-1, s=1]; s]; t1={}; Do[If[!PrimeQ[i] && LiQ[i]==1, AppendTo[t1, i]], {i, 10, 3112}]; t1 (* Jayanta Basu, May 03 2013 *) CROSSREFS Cf. A003459, A068652. Sequence in context: A176686 A007935 A076055 * A225193 A102616 A076023 Adjacent sequences:  A068650 A068651 A068652 * A068654 A068655 A068656 KEYWORD base,nonn AUTHOR Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 28 2002 EXTENSIONS Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jun 21 2002 STATUS approved

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Last modified June 20 02:19 EDT 2013. Contains 226416 sequences.