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A138115 Triangle read by rows: row n lists the first n digits of the decimal expansion of e.

%I A138115 #6 Dec 24 2014 17:22:36
%S A138115 2,2,7,2,7,1,2,7,1,8,2,7,1,8,2,2,7,1,8,2,8,2,7,1,8,2,8,1,2,7,1,8,2,8,
%T A138115 1,8,2,7,1,8,2,8,1,8,2,2,7,1,8,2,8,1,8,2,8,2,7,1,8,2,8,1,8,2,8,4,2,7,
%U A138115 1,8,2,8,1,8,2,8,4,5
%N A138115 Triangle read by rows: row n lists the first n digits of the decimal expansion of e.
%C A138115 Also, successive digits of A011543.
%e A138115 Triangle begins:
%e A138115 ..... 2
%e A138115 .... 2,7
%e A138115 ... 2,7,1
%e A138115 .. 2,7,1,8
%e A138115 . 2,7,1,8,2
%t A138115 Module[{nn=20,ed},ed=RealDigits[E,10,nn][[1]];Flatten[Table[Take[ed,n],{n,nn}]]] (* _Harvey P. Dale_, Dec 24 2014 *)
%Y A138115 Cf. A001113, A011543, A138068, A138069.
%K A138115 easy,nonn,tabl,base
%O A138115 1,1
%A A138115 _Omar E. Pol_, Mar 14 2008