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.

A071654 Inverse permutation to A071653.

Original entry on oeis.org

0, 1, 3, 2, 8, 6, 5, 7, 19, 15, 4, 22, 16, 52, 14, 13, 20, 60, 43, 51, 41, 11, 18, 53, 178, 42, 153, 39, 10, 21, 47, 155, 177, 125, 151, 38, 12, 61, 56, 136, 154, 555, 123, 150, 40, 33, 55, 179, 164, 135, 479, 553, 122, 152, 117, 29, 17, 159, 557, 163, 417, 477, 552, 124
Offset: 0

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Author

Antti Karttunen, May 30 2002

Keywords

Comments

A014137(n-1) = A071654(A072638(n)) for n>0 - Antti Karttunen, Jul 30 2012, based on Paul D. Hanna's similar observation in A071653.

Links

Crossrefs

Inverse permutation: A071653. A071672 gives the corresponding parenthesizations (from the term 1 onward) encoded as binary numbers, i.e. A071672(n) = A063171(A071654(n)) for n >= 1.
a(n) = A057163(A071652(n)). Cf. also A014486, A002262, A025581, A071651, A071652.

A071651 Permutation of natural numbers induced by reranking plane binary trees given in the standard lexicographic order (A014486) with an "arithmetic global ranking algorithm", using the bivariate form of A061579 as the packing bijection N x N -> N.

Original entry on oeis.org

0, 1, 2, 3, 4, 7, 5, 6, 10, 11, 29, 16, 22, 56, 8, 12, 9, 15, 36, 14, 21, 28, 66, 67, 436, 137, 254, 1597, 37, 79, 46, 121, 667, 106, 232, 407, 2212, 17, 38, 23, 30, 68, 13, 18, 20, 78, 465, 44, 153, 276, 1653, 19, 25, 27, 45, 91, 35, 55, 136, 703, 77, 120, 253, 435, 2278
Offset: 0

Views

Author

Antti Karttunen, May 30 2002

Keywords

Comments

It seems that a(A014137(n)) = a(A014137(n)-1)+1 = A006894(n+1) for all n. - Antti Karttunen, Jul 30 2012

Links

Crossrefs

Inverse permutation: A071652. Cf. also A014486, A061579, A071653, A071654.

A071652 Inverse permutation to A071651.

Original entry on oeis.org

0, 1, 2, 3, 4, 6, 7, 5, 14, 16, 8, 9, 15, 42, 19, 17, 11, 37, 43, 51, 44, 20, 12, 39, 121, 52, 126, 53, 21, 10, 40, 123, 149, 127, 154, 56, 18, 28, 38, 124, 151, 385, 155, 163, 47, 54, 30, 112, 122, 152, 387, 475, 164, 135, 156, 57, 13, 114, 376, 150, 388, 477, 503, 136
Offset: 0

Views

Author

Antti Karttunen, May 30 2002

Keywords

Links

Crossrefs

Inverse permutation: A071651. A071671 gives the corresponding parenthesizations (from the term 1 onward) encoded as binary numbers, i.e. A071671(n) = A063171(A071652(n)) for n >= 1.
A071652(n) = A057163(A071654(n)). Cf. also A014486, A002262, A025581, A071653, A071654.
Showing 1-3 of 3 results.

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

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