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A052155
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Pseudoprimes to both base 2 and base 3, i.e., intersection of A001567 and A005935.
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12
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1105, 1729, 2465, 2701, 2821, 6601, 8911, 10585, 15841, 18721, 29341, 31621, 41041, 46657, 49141, 52633, 63973, 75361, 83333, 83665, 88561, 90751, 93961, 101101, 104653, 107185, 115921, 126217, 162401, 172081, 176149, 188461
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 (first 201 terms from R. J. Mathar)
J. Bernheiden, Pseudoprimes (Text in German)
Index entries for sequences related to pseudoprimes
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MATHEMATICA
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Select[ Range[228240], !PrimeQ[ # ] && PowerMod[2, # - 1, # ] == 1 && PowerMod[3, # - 1, # ] == 1 &]
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PROG
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(PARI) is(n)=!isprime(n)&&Mod(2, n)^(n-1)==1&&Mod(3, n)^(n-1)==1 \\ Charles R Greathouse IV, Apr 12 2012
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CROSSREFS
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Cf. A001567, A005935, A083737.
Sequence in context: A025314 A025287 A025305 * A097102 A281877 A159781
Adjacent sequences: A052152 A052153 A052154 * A052156 A052157 A052158
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KEYWORD
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nice,nonn
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AUTHOR
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Harvey P. Dale, Jan 24 2000
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STATUS
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approved
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