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 A320839 #30 Dec 20 2018 23:36:48
%S A320839 2,1,0,3,2,2,6,4,6,2,3,11,2,8,11,8,16,5,5,16,19,5,1,14,16,7,14,10,27,
%T A320839 12,10,29,28,19,16,3,6,4,28,33,24,21,42,10,2,45,3,34,4,1,46,48,8,5,41,
%U A320839 20,53,17,31,50,10,6,56,27,29,18,15,11,19,49,37,64,56,51,34,21,3,27,15,61
%N A320839 Factorial expansion of sqrt(7) = Sum_{n>=1} a(n)/n!.
%H A320839 <a href="https://oeis.org/wiki/Index_to_OEIS:_Section_Fa#facbase">Index entries for factorial base representation</a>
%e A320839 sqrt(7) = 2 + 1/2! + 0/3! + 3/4! + 2/5! + 2/6! + 6/7! + 4/8! + 6/9! + ...
%p A320839 Digits:=200: a:=n->`if`(n=1,floor(sqrt(7)),floor(factorial(n)*sqrt(7))-n*floor(factorial(n-1)*sqrt(7))): seq(a(n),n=1..90); # _Muniru A Asiru_, Dec 10 2018
%Y A320839 Cf. A010465 (decimal expansion), A010121 (continued fraction).
%Y A320839 Cf. A009949 (sqrt(2)), A067881 (sqrt(3)), A068446 (sqrt(5)).
%K A320839 nonn
%O A320839 1,1
%A A320839 _G. C. Greubel_, Dec 10 2018