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.

A337609 Positive integers m such that A126286^k(m) = m for some positive integer k.

Original entry on oeis.org

2, 3, 14, 21, 26, 34, 38, 39, 50, 57, 62, 74, 75, 85, 86, 93, 94, 98, 110, 111, 118, 122, 129, 134, 142, 146, 147, 154, 158, 165, 170, 182, 183, 194, 201, 202, 206, 214, 218, 219, 230, 235, 237, 242, 254, 255, 266, 273, 274, 278, 286, 290, 291, 298, 302, 309
Offset: 1

Views

Author

Ely Golden, Oct 07 2020

Keywords

Comments

A126286^k(m) means apply A126286 to m k times.
Equivalently, the numbers that belong to a cycle under the map x -> A126286(x).
For any term m in this sequence, A126286(A126286(m)) = m.
Supersequence of A017545. Moreover, this sequence can be represented as an infinite union of arithmetic progressions.
2 and 3 are the only primes in this sequence.

Examples

			3 is a term since A126286(A126286(3)) = A126286(2) = 3.

Links

Crossrefs

Cf. A017545, A126286, A337610, A337611, A337612.

A337610 Positive integers m such that A126287^k(m) = m for some positive integer k.

Original entry on oeis.org

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
Offset: 1

Views

Author

Ely Golden, Oct 07 2020

Keywords

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.

Examples

			10 is a term since A126287(A126287(10)) = A126287(15) = 10.

Links

Crossrefs

Cf. A017641, A126287, A337609, A337611, A337612.

A337612 Positive integers m such that A126289^k(m) = m for some positive integer k.

Original entry on oeis.org

1, 6, 10, 15, 20, 21, 35, 38, 42, 45, 52, 58, 63, 66, 68, 74, 76, 77, 78, 84, 85, 88, 92, 99, 110, 116, 117, 124, 130, 133, 143, 146, 153, 164, 171, 187, 189, 198, 208, 224, 228, 232, 238, 246, 247, 255, 261, 266, 268, 272, 273, 279, 282, 284, 285, 304, 312
Offset: 1

Views

Author

Ely Golden, Oct 06 2020

Keywords

Comments

A126289^k(m) means apply A126289 to m k times.
Equivalently, the numbers that belong to a cycle under the map x -> A126289(x).
There are no primes in this sequence.

Examples

			6 is a term since A126289(A126289(6)) = A126289(10) = 6.

Links

Crossrefs

Cf. A052126, A126289, A337609, A337610, A337611.

Formula

For any term m, gcd {m, A126289(m), A126289(A126289(m)), ...} = A052126(m).
Showing 1-3 of 3 results.

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

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