login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A142204 Primes congruent to 7 mod 41. 2
7, 89, 499, 827, 991, 1237, 1319, 1483, 1811, 2221, 2467, 2549, 2713, 3041, 3533, 3697, 3779, 3943, 4271, 4517, 5009, 5419, 5501, 6977, 7879, 8699, 8863, 9109, 9437, 9601, 9929, 10093, 10667, 10831, 11159, 11897, 12143, 12553, 12799, 13127, 13291, 13537 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

FORMULA

a(n) ~ 40n log n. - Charles R Greathouse IV, Jul 02 2016

MATHEMATICA

Select[Range[7, 30000, 41], PrimeQ] (* Vladimir Joseph Stephan Orlovsky, May 17 2011 *)

Select[Prime[Range[5000]], MemberQ[{7}, Mod[#, 41]]&] (* Vincenzo Librandi, Aug 23 2012 *)

PROG

(MAGMA) [p: p in PrimesUpTo(14000) | p mod 41 eq 7 ]; // Vincenzo Librandi, Aug 23 2012

(PARI) is(n)=isprime(n) && n%41==7 \\ Charles R Greathouse IV, Jul 02 2016

CROSSREFS

Cf. A000040, A059236, A142199, A142200.

Sequence in context: A259360 A301925 A036902 * A071363 A174616 A089394

Adjacent sequences:  A142201 A142202 A142203 * A142205 A142206 A142207

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Jul 11 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 1 19:32 EDT 2020. Contains 334762 sequences. (Running on oeis4.)