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A188283 Numbers k such that iterations for the map r -> A061602(r) starting with k ends with a fixed point (factorions A014080). 1
0, 1, 2, 10, 11, 145, 154, 223, 232, 322, 405, 415, 450, 451, 504, 514, 540, 541, 569, 596, 659, 695, 956, 965, 1023, 1032, 1123, 1132, 1203, 1213, 1223, 1230, 1231, 1232, 1302, 1312, 1320, 1321, 1322, 1449, 1494, 1569, 1596, 1659, 1695, 1944, 1956, 1965, 2003 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

If k is a term, then (10^k - 1)/9 is also a term. - Jinyuan Wang, Nov 07 2020

LINKS

Table of n, a(n) for n=1..49.

EXAMPLE

Number 405 is in sequence because 405 -> 145 -> 145 -> ...

PROG

(PARI) is(k) = {my(t=k, v=List([k])); while(t=sum(i=1, #d=digits(t), d[i]!), if(t==v[#v], return(1), if(sum(i=1, #v-1, t==v[i]), return(0))); listput(v, t)); } \\ Jinyuan Wang, Nov 07 2020

CROSSREFS

Supersequence of A014080 (factorions).

Cf. A061602, A173447, A188284.

Sequence in context: A265747 A104459 A008560 * A174703 A258081 A300907

Adjacent sequences:  A188280 A188281 A188282 * A188284 A188285 A188286

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Mar 26 2011

EXTENSIONS

Missing terms a(1) and a(8)-a(10) aded by Jaroslav Krizek, Jan 28 2012

Name corrected and more terms from Jinyuan Wang, Nov 07 2020

STATUS

approved

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Last modified January 15 18:43 EST 2021. Contains 340188 sequences. (Running on oeis4.)