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 A249944 #43 Dec 07 2014 18:09:10
%S A249944 2,15,17,151,319,2703,3022,26879,56780,481119,1981256,10387399,
%T A249944 95467847,10387399,137017443,695474614,1527966671,5279374627,
%U A249944 27924839806,89053894045,562248204076,89053894045,740355992166,6011901831373,42823668811777,177306577078481
%N A249944 Numerator of fraction equal to the finite continued fraction [2,7,1,8,2,...] (first n digits of e).
%H A249944 Harvey P. Dale, <a href="/A249944/b249944.txt">Table of n, a(n) for n = 1..1000</a>
%e A249944 2 + 1/7 = 15/7 defines a(2).
%e A249944 2 + 1/(7 + 1/1) = 17/8 defines a(3).
%t A249944 Module[{nn=30,pd},pd=RealDigits[E,10,nn][[1]];Table[Numerator[ FromContinuedFraction[Take[pd,n]]],{n,nn}]]
%Y A249944 Cf. A001113, A036253, A036254, A251626.
%K A249944 frac,nonn,base
%O A249944 1,1
%A A249944 _Harvey P. Dale_, Dec 07 2014