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A153235
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Numbers n such that 8*n+7 is not prime.
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1
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1, 4, 6, 7, 10, 11, 13, 14, 16, 17, 19, 21, 22, 25, 26, 28, 30, 31, 34, 35, 36, 37, 39, 40, 41, 42, 43, 46, 48, 49, 50, 51, 52, 55, 56, 58, 61, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 76, 77, 79, 81, 82, 83, 84, 85, 86, 87, 88, 91, 94, 95, 96, 97, 98, 99, 100, 101
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OFFSET
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1,2
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LINKS
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EXAMPLE
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Distribution of the terms in the following triangular array:
*;
1,*;
*,*,*;
*,*,7,*;
*,6,*,*,*;
4,*,*,*,17,*;
*,*,*,16,*,*,*;
*,*,14,*,*,*,31,*;
*,11,*,*,*,30,*,*,*;
7,*,*,*,28,*,*,*,49,*:
*,*,*,25,*,*,*,48,*,*,*;
*,*,21,*,*,*,46,*,*,*,71,*; etc.
where * marks the non-integer values of (2*h*k + k + h - 3)/4 with h >= k >= 1. - Vincenzo Librandi, Jan 15 2013
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MATHEMATICA
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PROG
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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