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A118116 a(n) = n concatenated n^2 times. 0

%I #6 Oct 24 2013 13:17:13

%S 1,2222,333333333,4444444444444444,5555555555555555555555555,

%T 666666666666666666666666666666666666,

%U 7777777777777777777777777777777777777777777777777

%N a(n) = n concatenated n^2 times.

%C Is the partial sum of a(n) ever prime? See also A000461 Concatenate n n times.

%F a(n) = n concatenated A000290(n) times. a(n) = A000027(n) concatenated A000290(n) times.

%t Table[FromDigits[Table[n,{n^2}]],{n,8}] (* _Harvey P. Dale_, Oct 24 2013 *)

%Y Cf. A000027, A000290, A000461.

%K base,easy,nonn

%O 1,2

%A _Jonathan Vos Post_, May 11 2006

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)