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Search: id:A116893
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| A116893 |
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Numbers n such that GCD(n!+1, n^n+1) > 1. |
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+0
4
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| 1, 3, 23, 39, 51, 63, 95, 99, 131, 183, 191, 215, 239, 251, 299, 303, 315, 363, 371, 411, 419, 431, 443, 495, 543, 575, 659, 683, 711, 743, 755, 791, 831, 891, 911, 935, 975, 1019, 1031, 1055, 1071, 1143, 1155, 1191, 1211, 1223, 1251, 1275, 1295, 1355
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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See A116892 for the corresponding values of the GCD.
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EXAMPLE
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GCD(1!+1,1^1+1)=2, GCD(2!+1,2^2+1)=1, and GCD(3!+1,3^3+1)=7, so 1 and 3 are the first two terms of the sequence.
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MATHEMATICA
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Select[Range[1500], (GCD[ #!+1, #^#+1] > 1)&]
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CROSSREFS
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Cf. A014566, A038507, A067658, A116891, A116892, A116894.
Sequence in context: A133213 A006598 A106892 this_sequence A106066 A117738 A014582
Adjacent sequences: A116890 A116891 A116892 this_sequence A116894 A116895 A116896
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KEYWORD
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easy,nonn
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AUTHOR
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Giovanni Resta (g.resta(AT)iit.cnr.it), Mar 01 2006
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