Numbers n with property that for each single digit d of n, we can also see the decimal expansion of d^2 as a substring of n. Also n may not contain any 0 digits.
1, 11, 111, 1111, 11111, 111111, 1111111, 3648169, 3649816, 3681649, 3698164
3 seqfan posts
Tue Jan 3 18:57:19 CET 2012 [seqfan] Re: 10 different digits, 9 products