A376858 Fixed points of A071786.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 27, 28, 30, 32, 33, 35, 36, 40, 42, 44, 45, 48, 49, 50, 54, 55, 56, 60, 63, 64, 66, 70, 72, 75, 77, 80, 81, 84, 88, 90, 96, 98, 99, 100, 101, 105, 108, 110, 112, 120, 121, 125, 126, 128, 131, 132, 135, 140

Offset: 1

Author

Paolo Xausa, Oct 07 2024

Keywords

• nonn
• base

Comments

First differs from A033620 at n = 139. In the present sequence a(139) = 403 = 13 * 31: 13 and 31 are the reversals of each other but neither is a palindrome, so 403 is not in A033620.

Links

• Paolo Xausa, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A071786. Supersequence of A033620.

Programs

Mathematica

A376858Q[k_] := k == Times @@ (IntegerReverse[#1]^#2 & @@@ FactorInteger[k]);
Select[Range[200], A376858Q]