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.

Showing 1-4 of 4 results.

A102453 A101212(A101212(n)).

Original entry on oeis.org

1, 2, 3, 4, 5, 6, 7, 11, 9, 8, 10, 15, 14, 16, 19, 17, 12, 22, 13, 23, 21, 18, 20, 29, 25, 26, 24, 32, 27, 36, 30, 39, 33, 34, 35, 40, 28, 38, 43, 41, 31, 46, 37, 45, 42, 47, 44, 54, 49, 50, 51, 57, 52, 56, 55, 53, 59, 58, 48, 65, 63, 62, 64, 68, 69, 61, 60, 72, 70, 76, 67, 78
Offset: 1

Views

Author

Reinhard Zumkeller, Jan 09 2005

Keywords

Comments

Permutation of the positive integers with inverse A102455.

Links

A102454 Inverse of A101212.

Original entry on oeis.org

1, 2, 3, 5, 4, 7, 6, 11, 9, 8, 10, 13, 17, 12, 14, 15, 19, 23, 16, 18, 21, 20, 22, 29, 25, 26, 24, 31, 27, 28, 37, 30, 33, 34, 35, 32, 41, 38, 36, 39, 43, 47, 40, 42, 46, 44, 45, 53, 49, 51, 50, 48, 59, 52, 55, 57, 54, 58, 56, 61, 67, 62, 60, 65, 63, 71, 66, 69, 64, 68, 73, 70
Offset: 1

Views

Author

Reinhard Zumkeller, Jan 09 2005

Keywords

Links

A100806 a(1) = 1; for n>=2, a(n) = A001221(n)-th positive integer not yet in the sequence.

Original entry on oeis.org

1, 2, 3, 4, 5, 7, 6, 8, 9, 11, 10, 13, 12, 15, 16, 14, 17, 19, 18, 21, 22, 23, 20, 25, 24, 27, 26, 29, 28, 32, 30, 31, 34, 35, 36, 37, 33, 39, 40, 41, 38, 44, 42, 45, 46, 47, 43, 49, 48, 51, 52, 53, 50, 55, 56, 57, 58, 59, 54, 62, 60, 63, 64, 61, 66, 68, 65, 69, 70, 72, 67, 73
Offset: 1

Views

Author

Leroy Quet, Jan 04 2005

Keywords

Comments

A permutation of the positive integers.

Links

Crossrefs

Cf. A001221, A101212.
Inverse: A102451; A102450(n) = a(a(n)).
Cf. A102452.

Programs

  • Mathematica
    Block[{a = {1}, nn = 72, s, P = FoldList[Times, Prime@ Range@ 12]}, s = Range[2, nn + LengthWhile[P, # <= nn &]]; Do[AppendTo[a, s[[PrimeNu@ i ]]]; s = Complement[s, a], {i, 2, nn}]; a] (* Michael De Vlieger, Sep 24 2017 *)

Extensions

More terms from Reinhard Zumkeller, Jan 09 2005

A102455 A102453(A102453(n)).

Original entry on oeis.org

1, 2, 3, 4, 5, 6, 7, 10, 9, 11, 8, 17, 19, 13, 12, 14, 16, 22, 15, 23, 21, 18, 20, 27, 25, 26, 29, 37, 24, 31, 41, 28, 33, 34, 35, 30, 43, 38, 32, 36, 40, 45, 39, 47, 44, 42, 46, 59, 49, 50, 51, 53, 56, 48, 55, 54, 52, 58, 57, 67, 66, 62, 61, 63, 60, 73, 71, 64, 65, 69, 79, 68
Offset: 1

Views

Author

Reinhard Zumkeller, Jan 09 2005

Keywords

Comments

Permutation of the positive integers with inverse A102453.

Links

Crossrefs

Cf. A101212.
Showing 1-4 of 4 results.

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

Content is available under The OEIS End-User License Agreement.