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A337610 Positive integers m such that A126287^k(m) = m for some positive integer k. 4
1, 10, 15, 22, 26, 33, 34, 46, 51, 58, 65, 69, 70, 82, 86, 87, 94, 105, 106, 118, 122, 123, 130, 134, 141, 142, 146, 154, 159, 166, 177, 178, 190, 195, 202, 206, 213, 214, 215, 218, 226, 231, 238, 249, 250, 254, 262, 266, 267, 274, 285, 286, 298, 302, 303, 310 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
A126287^k(m) means apply A126287 to m k times.
Equivalently, the numbers that belong to a cycle under the map x -> A126287(x).
For any term m in this sequence, A126287(A126287(m)) = m.
Supersequence of A017641. Moreover, this sequence (excluding the first term) can be represented as an infinite union of arithmetic progressions.
There are no primes in this sequence.
LINKS
EXAMPLE
10 is a term since A126287(A126287(10)) = A126287(15) = 10.
CROSSREFS
Sequence in context: A115682 A075523 A115679 * A109373 A267329 A120138
KEYWORD
nonn,easy
AUTHOR
Ely Golden, Oct 07 2020
STATUS
approved

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Last modified March 28 15:28 EDT 2024. Contains 371254 sequences. (Running on oeis4.)