A188284 Finite sequence of numbers n such that iterations for the map r -> A061602(r) starting with n ends with the same number n.

1, 2, 145, 169, 871, 872, 1454, 40585, 45361, 45362, 363601

Offset

1,2

Comments

See A173447 = the number of iterations for the map r -> A061602(r), A061602 = sum of factorials of the digits of n.

Superset of A014080 (factorions).

Links

Table of n, a(n) for n=1..11.

Example

Number 169 is in sequence because 169 -> 363601 -> 1454 -> 169.

Crossrefs

Cf. A188283, A014080, A173447, A061602.

Sequence in context: A103207 A093002 A074319 * A306955 A228507 A254499

Adjacent sequences: A188281 A188282 A188283 * A188285 A188286 A188287

Keyword

nonn,base

Author

Jaroslav Krizek, Mar 26 2011

Status

approved