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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A360591 Primes in A360464.

Original entry on oeis.org

2, 3, 5, 7, 17, 29, 43, 59, 97, 193, 251, 277, 389, 439, 491, 577, 601, 659, 719, 911, 1049, 1237, 1429, 1511, 1951, 2141, 2239, 2293, 2339, 2441, 3329, 3449, 3571, 3637, 3821, 3889, 4079, 4211, 4481, 4759, 5569, 5641, 6269, 6761, 7537, 7621, 8161, 8629, 8719
Offset: 1

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Author

Jack Braxton, Feb 12 2023

Keywords

Comments

This sequence is finite and a(103) = A360464(457) = 61861 is the last term here, since A360464(k) is divisible by 5 for all k >= 458.

Crossrefs

Cf. A000040, A360464.

Programs

  • Mathematica
    s[1] = s[2] = s[3] = 1; s[n_] := s[n] = s[n - 1] + s[n - 2] - s[n - 3] + GCD[s[n - 1], s[n - 3]]; Select[Array[s, 180], PrimeQ] (* Amiram Eldar, Feb 24 2023 *)

Formula

A000040 intersect A360464.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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