|
| |
|
|
A166569
|
|
Numbers n such that 12*n+7 is not prime.
|
|
1
|
|
|
|
4, 7, 9, 14, 15, 19, 20, 21, 24, 26, 28, 29, 32, 33, 34, 35, 37, 39, 42, 44, 46, 48, 49, 54, 55, 56, 58, 59, 63, 64, 66, 69, 70, 72, 74, 77, 78, 79, 81, 83, 84, 85, 89, 91, 92, 94, 95, 96, 98, 99, 100, 101, 103, 104, 105, 109, 111, 112, 113, 114, 115, 117, 119, 124, 125
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Distribution of the terms in the following triangular array:
*;
*,*;
*,*,*;
*,*,*,*;
*,4,*,*,*;
*,*,7,*,*,*;
*,*,*,*,*,*,*;
*,*,*,*,15,*,*,*;
*,*,*,*,*,20,*,*,*;
*,*,*,*,*,*,*,*,*,*;
*,9,*,*,*,*,*,32,*,*,*;
*,*,14,*,*,*,*,*,39,*,*,*; etc.
where * marks the non-integer values of (2*h*k + k + h - 3)/6 with h >= k >= 1. - Vincenzo Librandi, Jan 14 2013
|
|
|
MATHEMATICA
|
|
|
|
PROG
|
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn,easy
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
