This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A195604 #15 Jan 27 2022 21:59:16
%S A195604 2,27,271,1359,13591,67957,2718281,13591409,135914091,679570457,
%T A195604 6795704571,54365636569,2718281828459,2718281828459,16989261427869,
%U A195604 543656365691809,6795704571147613,271828182845904523,543656365691809047,27182818284590452353
%N A195604 Numerator of floor(e*10^n)/10^n, where e = exp(1) = A001113.
%C A195604 Numerator of the decimal fraction of e = 2.71828... truncated to a given number of decimal places.
%e A195604 a(2) = 271 is the numerator of 2.71 = 271/100.
%e A195604 a(3) = 1359 is the numerator of 2.718 = 2718/1000 = 1359/500.
%t A195604 Module[{nn=30,ee},ee=RealDigits[E,10,nn][[1]];Join[{2},Rest[ Numerator[ Table[ FromDigits[Take[ee,n]]/10^n,{n,nn}]]]]] (* _Harvey P. Dale_, May 15 2015 *)
%o A195604 (PARI) a(n,c=exp(1))=numerator(c\.1^n/10^n) \\ _M. F. Hasler_, Sep 21 2011
%K A195604 nonn,base
%O A195604 0,1
%A A195604 _M. F. Hasler_, following a suggestion by _Eric Angelini_, Sep 21 2011