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%I #4 Sep 06 2015 16:23:23
%S 2,26,2612,261220,26122030,2612203042,261220304256,26122030425672,
%T 2612203042567290,2612203042567290110,2612203042567290110132,
%U 2612203042567290110132156,2612203042567290110132156182
%N Concatenation of first n positive oblong numbers.
%C Oblong numbers are also called promic, pronic or heteromecic (numbers).
%t Module[{nn=20,c},c=2*Accumulate[Range[nn]];Table[FromDigits[ Flatten[ IntegerDigits/@ Take[c,n]]],{n,nn}]] (* _Harvey P. Dale_, Sep 06 2015 *)
%Y Cf. A007908, A132932. Oblong numbers: A002378.
%K base,easy,nonn
%O 1,1
%A _Omar E. Pol_, Nov 26 2007
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