A035935 Smallest number that always takes at least n steps to reach 0 under "k -> any product of 2 numbers whose concatenation is k".

0, 1, 11, 26, 39, 77, 666

Offset

0,3

Comments

Next term is at least 3*10^7. 666 may be the last term. - Naohiro Nomoto, Apr 07 2001

Checked up to 1.55*10^10. No other numbers apart 666 with minimal path of length 6. The largest number found with minimal path equal to 5 is 711111. - Giovanni Resta, Oct 03 2012

Links

Table of n, a(n) for n=0..6.

Crossrefs

Cf. A035930-A035934.

Sequence in context: A035934 A035932 A035933 * A193107 A084584 A188089

Adjacent sequences: A035932 A035933 A035934 * A035936 A035937 A035938

Keyword

nonn,base,nice

Author

Erich Friedman

Status

approved