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.

A113221 A113220(A113220(n)).

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 21, 23, 19, 25, 18, 27, 20, 29, 22, 26, 28, 24, 30, 31, 32, 33, 41, 35, 43, 45, 37, 47, 39, 49, 34, 42, 36, 44, 46, 38, 48, 40, 61, 51, 63, 53, 65, 67, 55, 69, 57, 58, 59, 60, 50, 62, 64, 52, 81, 54, 83, 56, 85, 71, 87
Offset: 0

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Author

Reinhard Zumkeller, Oct 18 2005

Keywords

Comments

Inverse integer permutation of T000004;
A113218(a(n)) = a(A113218(n)) = A113220(n).

Links

A113218 Lexicographically earliest permutation of the natural numbers with alternating parities of digital roots in decimal representation.

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 10, 13, 12, 15, 14, 17, 16, 20, 18, 22, 19, 24, 21, 26, 23, 29, 25, 31, 27, 33, 28, 35, 30, 38, 32, 40, 34, 42, 36, 44, 37, 47, 39, 49, 41, 51, 43, 53, 45, 56, 46, 58, 48, 60, 50, 62, 52, 65, 54, 67, 55, 69, 57, 71, 59, 74, 61, 76, 63, 78, 64, 80
Offset: 0

Views

Author

Reinhard Zumkeller, Oct 18 2005

Keywords

Comments

inverse: A113220; A113219 = a(a(n));
A113217(a(n)) = A000035(n).

Links

Crossrefs

Cf. A010888.

A113219 A113218(A113218(n)).

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 22, 20, 24, 18, 26, 19, 29, 21, 27, 23, 28, 25, 30, 31, 32, 33, 42, 35, 44, 38, 47, 40, 49, 34, 43, 36, 45, 37, 46, 39, 48, 41, 62, 51, 65, 53, 67, 56, 69, 58, 59, 60, 61, 50, 63, 52, 64, 54, 83, 55, 85, 57, 87, 71, 89
Offset: 0

Views

Author

Reinhard Zumkeller, Oct 18 2005

Keywords

Comments

Inverse integer permutation of A113221;
A113220(a(n)) = a(A113220(n)) = A113218(n).

Links

Showing 1-3 of 3 results.

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

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