A110801
Numbers n such that 12n + 1 is prime.
Original entry on oeis.org
1, 3, 5, 6, 8, 9, 13, 15, 16, 19, 20, 23, 26, 28, 29, 31, 33, 34, 35, 36, 38, 45, 48, 50, 51, 55, 56, 59, 61, 63, 64, 69, 71, 73, 78, 83, 84, 85, 86, 89, 91, 93, 94, 96, 100, 101, 103, 104, 108, 110, 115, 119, 121, 124, 129, 133, 134, 135, 138, 139, 141, 145, 146, 148
Offset: 1
If n=96 then 12*n + 1 = 1153 (prime).
A167056
Numbers k such that 12*k + 7 is prime.
Original entry on oeis.org
0, 1, 2, 3, 5, 6, 8, 10, 11, 12, 13, 16, 17, 18, 22, 23, 25, 27, 30, 31, 36, 38, 40, 41, 43, 45, 47, 50, 51, 52, 53, 57, 60, 61, 62, 65, 67, 68, 71, 73, 75, 76, 80, 82, 86, 87, 88, 90, 93, 97, 102, 106, 107, 108, 110, 116, 118, 120, 121, 122, 123, 127, 128, 130, 131, 135, 138
Offset: 1
2 is in the sequence since 12*2+7 = 31 is prime.
A167057
Numbers k such that 12*k + 11 is prime.
Original entry on oeis.org
0, 1, 3, 4, 5, 6, 8, 10, 13, 14, 15, 18, 19, 20, 21, 25, 28, 29, 31, 34, 35, 36, 38, 39, 40, 41, 46, 48, 49, 53, 54, 56, 59, 61, 68, 69, 71, 73, 75, 78, 80, 81, 84, 85, 90, 91, 95, 96, 98, 101, 104, 106, 108, 109, 113, 118, 119, 120, 123, 124, 125, 126, 129, 130, 131, 133
Offset: 1
3 is in the sequence since 12*3+11 = 47 is prime.
A166563
Numbers n such that 12*n+5 is not prime.
Original entry on oeis.org
5, 6, 10, 13, 15, 17, 18, 20, 25, 27, 28, 30, 31, 34, 35, 36, 39, 40, 41, 44, 45, 48, 50, 52, 55, 57, 59, 60, 61, 62, 65, 69, 70, 72, 74, 75, 76, 80, 82, 83, 85, 86, 89, 90, 93, 94, 95, 96, 97, 100, 103, 104, 105, 109, 110, 111, 112, 115, 116, 118, 120, 121, 122, 125, 126
Offset: 1
Distribution of the terms in the following triangular array:
*;
*,*;
*,*,*;
*,*,*,*;
*,*,6,*,*;
*,5,*,*,*,*;
*,*,*,*,*,*,*;
*,*,*,*,*,18,*,*;
*,*,*,*,17,*,*,*,*;
*,*,*,*,*,*,*,*,*,*;
*,*,13,*,*,*,*,*,36,*,*;
*,10,*,*,*,*,*,35,*,*,*,*; etc.
where * marks the non-integer values of (2*h*k + k + h - 2)/6 with h >= k >= 1. - _Vincenzo Librandi_, Jan 14 2013
Showing 1-4 of 4 results.
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