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.

A260485 Smallest number m such that 2*m = OddPrime(n) + q, q prime, and 2*m - prime(k) is not prime for k less than n.

Original entry on oeis.org

3, 4, 6, 8, 10, 14, 16, 20, 24, 22, 28, 32, 40, 38, 48, 51, 46, 55, 62, 58, 75, 68, 74, 82, 87, 91, 98, 94, 110, 112, 116, 123, 121, 128, 130, 142, 136, 152, 155, 146, 166, 182, 175, 188, 190, 184, 207, 200, 214, 206, 218, 232, 221, 243, 252, 255, 247, 238
Offset: 1

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Author

Reinhard Zumkeller, Aug 11 2015

Keywords

Comments

a(n) = A260580(n,1);
smallest number m such that the n-th odd prime p is needed to write 2*m = (p+q)/2.

Crossrefs

Programs

  • Haskell
    a260485 = head . a260580_row