|
| |
|
|
A153051
|
|
Numbers n such that 2*n-17 is not a prime
|
|
3
| |
|
|
13, 16, 19, 21, 22, 25, 26, 28, 31, 33, 34, 36, 37, 40, 41, 43, 46, 47, 49, 51, 52, 54, 55, 56, 58, 61, 64, 66, 67, 68, 69, 70, 71, 73, 75, 76, 79, 80, 81, 82, 85, 86, 88, 89, 91, 93, 94, 96, 97, 100, 101, 102, 103, 106, 109, 110, 111, 112, 113, 115, 116, 117, 118, 119
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Adding 1 to each entry yields A153041. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 19 2008]
|
|
|
FORMULA
| Let p = prime number n = (p^2+17)/2 mod (p)
|
|
|
EXAMPLE
| 13; 16, 21; 19, 26, 33; 22, 31, 40, 49; 25, 36, 47, 58, 69; 28, 41, 54, 67, 80, 93;
|
|
|
CROSSREFS
| A098605
Sequence in context: A158697 A172975 A058225 * A064805 A179202 A159975
Adjacent sequences: A153048 A153049 A153050 * A153052 A153053 A153054
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Dec 17 2008
|
|
|
EXTENSIONS
| 57 removed by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 19 2008
|
| |
|
|
