cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A256839 Primes of form n^2 + 14641.

Original entry on oeis.org

14657, 14741, 14897, 15217, 15541, 15797, 15937, 19541, 20117, 22037, 22741, 23857, 25457, 28097, 30517, 31541, 38977, 40241, 42197, 43541, 44917, 47041, 48497, 50741, 57077, 58741, 61297, 64817, 65717, 74177, 77141, 80177, 82241, 87541, 107057, 117041
Offset: 1

Views

Author

Reinhard Zumkeller, Apr 11 2015

Keywords

Comments

Conjecture: sequence is infinite.

Links

Crossrefs

Cf. A010051, A000290; subsequence of A028916.
Primes of form n^2+b^4, b fixed: A002496 (b=1), A243451 (b=2), A256775 (b=3), A256776 (b=4), A256777 (b=5), A256834 (b=6), A256835 (b=7), A256836 (b=8), A256837 (b=9), A256838 (b=10), A256840 (b=12), A256841 (b=13).

Programs

  • Haskell
    a256839 n = a256839_list !! (n-1)
a256839_list = [x | x <- map (+ 14641) a000290_list, a010051' x == 1]
  • Mathematica
    Select[Range[500]^2+14641,PrimeQ] (* Harvey P. Dale, Mar 20 2017 *)

A256840 Primes of form n^2 + 20736.

Original entry on oeis.org

20857, 21577, 21961, 23761, 27961, 28657, 29017, 29761, 30937, 33961, 34897, 37897, 41761, 42937, 49297, 51361, 60337, 62761, 65257, 80761, 83737, 93097, 107761, 111337, 113761, 122497, 132961, 142537, 151057, 164377, 173617, 181537, 188017, 192961, 218761
Offset: 1

Views

Author

Reinhard Zumkeller, Apr 11 2015

Keywords

Comments

Conjecture: sequence is infinite.

Links

Crossrefs

Cf. A010051, A000290; subsequence of A028916.
Primes of form n^2+b^4, b fixed: A002496 (b=1), A243451 (b=2), A256775 (b=3), A256776 (b=4), A256777 (b=5), A256834 (b=6), A256835 (b=7), A256836 (b=8), A256837 (b=9), A256838 (b=10), A256839 (b=11), A256841 (b=13).

Programs

  • Haskell
    a256840 n = a256840_list !! (n-1)
a256840_list = [x | x <- map (+ 20736) a000290_list, a010051' x == 1]

A256841 Primes of form n^2 + 28561.

Original entry on oeis.org

28597, 28661, 28817, 28961, 29137, 29717, 30161, 30497, 30677, 31477, 32917, 33461, 34337, 34961, 35617, 37397, 38561, 42017, 42961, 47057, 49297, 49877, 51061, 55457, 60961, 62417, 64661, 66977, 70177, 70997, 72661, 74357, 75217, 76961, 78737, 86161, 93077
Offset: 1

Views

Author

Reinhard Zumkeller, Apr 11 2015

Keywords

Comments

Conjecture: sequence is infinite.

Links

Crossrefs

Cf. A010051, A000290; subsequence of A028916.
Primes of form n^2+b^4, b fixed: A002496 (b=1), A243451 (b=2), A256775 (b=3), A256776 (b=4), A256777 (b=5), A256834 (b=6), A256835 (b=7), A256836 (b=8), A256837 (b=9), A256838 (b=10), A256839 (b=11), A256840 (b=12).

Programs

  • Haskell
    a256841 n = a256841_list !! (n-1)
a256841_list = [x | x <- map (+ 28561) a000290_list, a010051' x == 1]
  • Mathematica
    Select[Range[300]^2+28561,PrimeQ] (* Harvey P. Dale, Oct 18 2021 *)
Previous Showing 11-13 of 13 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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