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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A254461 Prime(n) is included iff prime(n) + n^3 is also prime.

Original entry on oeis.org

2, 3, 7, 13, 89, 139, 151, 317, 397, 443, 503, 541, 569, 619, 641, 659, 733, 827, 881, 911, 953, 1091, 1249, 1439, 1451, 1627, 1693, 1783, 2143, 2393, 2663, 2707, 2753, 2861, 2903, 2969, 3023, 3119, 3413, 3727, 4003, 4243, 4259, 4457, 4513, 4673, 4973, 5077
Offset: 1

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Author

Vincenzo Librandi, Feb 04 2015

Keywords

Examples

			7 is in this sequence because 7+64=71.
13 is in this sequence because 13+216=229.
		

Crossrefs

Cf. A253971.

Programs

  • Magma
    [NthPrime(n): n in [1..700] | IsPrime(NthPrime(n)+n^3)];
  • Mathematica
    Prime[Select[Range[700], PrimeQ[Prime[#] + #^3] &]]

Formula

a(n) = prime(A141526(n)). - Michel Marcus, Feb 04 2015
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