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.

A225040 a(n) is the position of prime(n) in A225039, and a(n)=0, if prime(n) is not in A225039.

Original entry on oeis.org

1, 2, 3, 4, 6, 5, 9, 7, 8, 10, 13, 15, 16, 28, 50, 20, 11, 12, 14, 69, 66, 17, 19, 18, 32, 86, 21, 64, 22, 38, 26, 74, 23, 41, 24, 25, 71, 89, 27, 49, 84, 33, 30, 35, 34, 31, 29, 175, 96, 60, 39, 181, 36, 110, 40, 46, 37, 68, 138, 119, 45, 44, 139, 42, 73, 43
Offset: 1

Views

Author

Vladimir Shevelev, Apr 25 2013

Keywords

Comments

Conjecture: All terms are positive, or equivalently, the sequence is a permutation of the positive integers.

Crossrefs

Programs

  • Mathematica
    a={}; n=1; While[(tmp=Position[A225039, Prime[n]]) != {}, AppendTo[a,tmp]; n++]; Flatten[a] (* Peter J. C. Moses, Apr 25 2013 *)