A155854 Numbers k such that 13*k + 3 is not prime.
1, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 33, 34, 35, 36, 37, 38, 39, 41, 42, 43, 44, 45, 47, 48, 49, 51, 52, 53, 54, 55, 56, 57, 59, 60, 61, 63, 64, 65, 66, 67, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79, 80, 81, 83, 84, 85, 86, 87
Offset: 1
Links
- Vincenzo Librandi, Table of n, a(n) for n = 1..1000
Programs
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Magma
[n: n in [0..90] | not IsPrime(13*n + 3)]; // Vincenzo Librandi, Oct 15 2012
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Mathematica
Select[Range[100], !PrimeQ[13 # + 3] &]
Extensions
Data corrected by Harvey P. Dale, Sep 11 2011