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.

A138005 Odd prime numbers p for which not all nontrivial cycles of the Ducci map on p-tuples modulo 2 have the same length.

Original entry on oeis.org

17, 41, 73, 97, 109, 113, 137, 193, 229, 241, 257, 277, 331, 337, 353, 397, 433, 449, 571, 577, 631, 641, 673, 683, 733, 769, 953, 997, 1009, 1013, 1021, 1033, 1051, 1069, 1093, 1103, 1153, 1181, 1201, 1217, 1297, 1321, 1361, 1429, 1489, 1597, 1601, 1613, 1657, 1709, 1789, 1801, 1831, 1873, 1889, 1933, 2011, 2017, 2081, 2113, 2137, 2143, 2153, 2161, 2179, 2273, 2297, 2341, 2381, 2441, 2521, 2593, 2617, 2633
Offset: 1

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Author

T. D. Noe, Feb 26 2008

Keywords

Comments

Primes p such that A111944(p) > 2. - Max Alekseyev, Jul 10 2025

Crossrefs

Extensions

a(8)-a(74) from Max Alekseyev, Jul 10 2025