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 1-3 of 3 results.

A341487 Second row of A341458.

Original entry on oeis.org

2, 1, 5, 6, 3, 4, 8, 7, 17, 18, 22, 21, 20, 19, 23, 24, 9, 10, 14, 13, 12, 11, 15, 16, 26, 25, 29, 30, 27, 28, 32, 31, 65, 66, 70, 69, 68, 67, 71, 72, 82, 81, 85, 86, 83, 84, 88, 87, 74, 73, 77, 78, 75, 76, 80, 79, 89, 90, 94, 93, 92, 91, 95, 96, 33, 34, 38
Offset: 1

Views

Author

Rémy Sigrist, Feb 13 2021

Keywords

Comments

This sequence is a self-inverse permutation of the positive integers.
This sequence has similarities with A057300.

Examples

			a(7) = A341458(2, 7) = 8.

Links

Crossrefs

Cf. A057300, A341458.

Programs

  • PARI
    See Links section.

Formula

a(n) = A341458(2, n).

A341489 Third row of A341458.

Original entry on oeis.org

3, 5, 1, 7, 2, 8, 4, 6, 33, 39, 35, 37, 36, 38, 34, 40, 65, 71, 67, 69, 68, 70, 66, 72, 99, 101, 97, 103, 98, 104, 100, 102, 9, 15, 11, 13, 12, 14, 10, 16, 43, 45, 41, 47, 42, 48, 44, 46, 75, 77, 73, 79, 74, 80, 76, 78, 105, 111, 107, 109, 108, 110, 106, 112
Offset: 1

Views

Author

Rémy Sigrist, Feb 13 2021

Keywords

Comments

This sequence is a self-inverse permutation of the positive integers.
This sequence has similarities with A126006.

Examples

			a(4) = A341458(3, 4) = 7.

Links

Crossrefs

Cf. A126006, A341458.

Programs

  • PARI
    See Links section.

Formula

a(n) = A341458(3, n).

A341488 a(0) = 1, and for any n > 0, a(n) = A341458(a(n-1), n).

Original entry on oeis.org

1, 1, 2, 5, 8, 4, 2, 8, 1, 9, 25, 116, 8, 117, 25, 16, 1, 17, 25, 108, 8, 109, 25, 24, 1, 25, 2, 29, 8, 28, 2, 32, 1, 33, 97, 92, 8, 93, 97, 40, 1, 41, 122, 45, 8, 44, 122, 48, 1, 49, 122, 53, 8, 52, 122, 56, 1, 57, 97, 68, 8, 69, 97, 64, 1, 65, 97, 60, 8, 61
Offset: 0

Views

Author

Rémy Sigrist, Feb 13 2021

Keywords

Comments

This sequence is an analog of the factorial function for the group described in A341458, and has interesting graphical features.

Links

Crossrefs

Cf. A000142, A008590, A017077, A341458.

Programs

  • PARI
    See Links section.

Formula

Apparently:
- a(n) = 1 iff n = 1 or n belongs to A008590,
- a(n) = n iff n belongs to A017077.
Showing 1-3 of 3 results.

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

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