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Repdigit numbers with repdigit digital product.
2

%I #11 Mar 30 2012 19:00:28

%S 0,1,2,3,4,5,6,7,8,9,11,22,33,111,222,1111,11111,111111,1111111,

%T 11111111,111111111,1111111111,11111111111,111111111111,1111111111111,

%U 11111111111111,111111111111111,1111111111111111,11111111111111111,111111111111111111,1111111111111111111

%N Repdigit numbers with repdigit digital product.

%C Conjecture: a(n) is repunit for n >= 16.

%Y Cf. A201061 (repdigit numbers with repdigit digital sum).

%Y A201064 (repdigit numbers with repdigit digital sum and product).

%K nonn,base

%O 1,3

%A _Jaroslav Krizek_, Nov 26 2011

%E Corrected and extended by Jaroslav Krizek.