A281369 -id:A281369

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A281370

Orbit of 25 under repeated applications of the inverse of the map m -> A280864(m).

+10
2

25, 35, 36, 33, 43, 66, 68, 60, 61, 95, 101, 149, 263, 454, 381, 411, 432, 423, 491, 910, 884, 856, 730, 707, 702, 682, 653, 1277, 2443, 2605, 2783, 2802, 2603, 2588, 2025, 2154, 1962, 1692, 1566, 1577, 1557, 1729, 970, 946, 912, 867, 786, 741, 490, 478, 422, 369, 404, 344, 337, 578, 568

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

It is a strong conjecture that A280864 is a permutation of the positive integers. The orbit containing 25 appears to be the first infinite orbit. See A281370 for the orbit of 25 under the inverse permutation, and see A280864 for other orbits (there are several small cycles).

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..436

CROSSREFS

Cf. A280864, A281369.

KEYWORD

nonn,look

AUTHOR

N. J. A. Sloane, Feb 03 2017

STATUS

approved

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