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.

A227352 Permutation of nonnegative integers: map each number by lengths of runs in its binary representation to the number in whose once left-shifted Zeckendorf representation occurs the same run lengths (in the same order) as the lengths of consecutive blocks of zeros.

Original entry on oeis.org

0, 1, 4, 2, 7, 12, 6, 3, 11, 19, 33, 20, 10, 17, 9, 5, 18, 30, 51, 31, 54, 88, 53, 32, 16, 27, 46, 28, 15, 25, 14, 8, 29, 48, 80, 49, 83, 135, 82, 50, 87, 142, 232, 143, 86, 140, 85, 52, 26, 43, 72, 44, 75, 122, 74, 45, 24, 40, 67, 41, 23, 38, 22, 13, 47, 77
Offset: 0

Views

Author

Antti Karttunen, Jul 08 2013

Keywords

Comments

See the comments at the inverse permutation A227351 where the idea behind this mapping is explained.

Crossrefs

Inverse permutation: A227351. Cf. A048680, A003188.

Programs

Formula

a(n) = A048680(A003188(n)). [The defining formula]
Moreover, this permutation effects the following correspondences:
For n>=1 A000523(n) = A102364(a(n)).
For all n, A167489(n) = A227355(a(2n+1)).