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A102624
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Numbers n such that the number n23 is prime.
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2
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0, 2, 5, 8, 11, 12, 14, 15, 17, 18, 24, 30, 33, 36, 38, 39, 44, 45, 47, 50, 53, 56, 59, 63, 68, 75, 77, 78, 81, 84, 86, 89, 93, 96, 99, 102, 107, 114, 119, 123, 128, 129, 135, 137, 143, 144, 147, 149, 158, 159, 162, 168, 171, 176, 179, 182, 185, 194, 200, 201, 203, 210
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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EXAMPLE
| If n=2, then n23 = 223 (prime)
If n=45, then n23 = 4523 (prime)
If n=99, then n23 = 9923 (prime)
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PROG
| (MAGMA) [ n: n in [1..700] | IsPrime(Seqint([3, 2] cat Intseq(n))) ]; // From Vincenzo Librandi, Feb 04 2011, misses the zero.
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CROSSREFS
| Cf. A103401, A103408, A103118.
Sequence in context: A188802 A031141 A143263 * A070328 A124934 A125217
Adjacent sequences: A102621 A102622 A102623 * A102625 A102626 A102627
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KEYWORD
| nonn,base
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 31 2005
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EXTENSIONS
| More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Feb 04 2005
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