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 A020039 #11 Sep 23 2022 18:11:57 %S A020039 1,0,1,1,5,20,109,695,5142,43193,406016,4222569,48137291,596902408, %T A020039 7998492273,115178288736,1773745646540,29089428603255,506156057696641, %U A020039 9313271461618196,180677466355392996,3685820313650017111 %N A020039 Nearest integer to Gamma(n + 2/5)/Gamma(2/5). %C A020039 Gamma(n + 2/5)/Gamma(2/5) = 1, 2/5, 14/25, 168/125, 2856/625, 62832/3125, 1696464/15625, 54286848/78125, ... - _R. J. Mathar_, Sep 04 2016 %p A020039 Digits := 64:f := proc(n,x) round(GAMMA(n+x)/GAMMA(x)); end; %Y A020039 Cf. A047055, A020084, A020129. %K A020039 nonn %O A020039 0,5 %A A020039 _Simon Plouffe_