|
|
A095347
|
|
n sets a new record for number of iterations of A034690 (sum of digits of the divisors of n) needed to reach 15 (see A086793).
|
|
5
|
|
|
2, 5, 9, 10, 16, 18, 34, 36, 66, 162, 924, 71820, 127005777360
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
323203999999676796 takes 22 iterations to reach 15, but it probably is not the next term.
One could prefix a(0)=1 and change the definition to "... reach a fixed point, 1 or 15." - M. F. Hasler, Nov 08 2015
|
|
LINKS
|
|
|
PROG
|
(PARI) m=0; for(n=1, 9e9, A086793(n)>m||next; m=A086793(n); print1(n", "))
|
|
CROSSREFS
|
|
|
KEYWORD
|
more,nonn,base
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|