|
Search: id:A002837
|
|
|
| A002837 |
|
Numbers n such that n^2 - n + 41 is prime.
(Formerly M0473 N0174)
|
|
+0
8
|
|
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 43, 44, 46, 47, 48, 49, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 64, 65, 67, 68, 69, 70, 71
(list; graph; listen)
|
|
|
OFFSET
|
1,3
|
|
|
REFERENCES
|
T. M. Apostol, Introduction to Analytic Number Theory, Springer-Verlag, 1976, page 6.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
LINKS
|
T. D. Noe, Table of n, a(n) for n = 1..10000
|
|
PROGRAM
|
(PARI) v=[ ]; for(n=0, 100, if(isprime(n^2-n+41), v=concat(v, n), )); v
|
|
CROSSREFS
|
Cf. A007634, A056561.
Sequence in context: A120951 A044923 A083243 this_sequence A056561 A085735 A044922
Adjacent sequences: A002834 A002835 A002836 this_sequence A002838 A002839 A002840
|
|
KEYWORD
|
nonn,nice,easy
|
|
AUTHOR
|
N. J. A. Sloane (njas(AT)research.att.com).
|
|
|
Search completed in 0.002 seconds
|
