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%I #17 Jun 19 2015 16:30:48
%S 1001,2101,21301,222101,2304401,23553101,244153501,2520607101,
%T 25937424601,267120945101
%N Expressed in base n, the number (n+1)^n.
%C a(12) cannot be represented in base 12 using only the digits 0, 1, ..., 9.
%e For n=2, (n+1)^n is 9 and 9 = 1001_2.
%t Table[FromDigits@ IntegerDigits[(n + 1)^n, n], {n, 2, 11}] (* _Michael De Vlieger_, Jun 19 2015 *)
%o (PARI) a(n) = subst(Pol(digits((n+1)^n, n)), x, 10); \\ _Michel Marcus_, Jun 18 2015
%K nonn,base
%O 2,1
%A _Anders Wallberg_, Jun 18 2015