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 A133890 #19 Apr 26 2023 20:21:24
%S A133890 1,1,6,6,1,3,8,8,8,8,6,6,6,6,6,0,5,5,0,0,5,5,0,0,0,6,6,6,6,6,8,8,3,3,
%T A133890 8,6,1,1,6,6,0,0,0,0,0,0,0,0,5,5,6,6,1,1,6,8,8,8,8,8,6,6,6,6,1,5,0,0,
%U A133890 5,5,0,0,0,0,0,6,6,6,6,6,3,3,8,8,3,1,6,6,6,6,0,0,0,0,0,0,5,5,0,0,1,1,6,6,6
%N A133890 Binomial(n+10,n) mod 10.
%C A133890 Periodic with length A133900(10)=4*10^2=400.
%H A133890 Ray Chandler, <a href="/A133890/b133890.txt">Table of n, a(n) for n = 0..1000</a>
%H A133890 <a href="/index/Rec#order_231">Index entries for linear recurrences with constant coefficients</a>, order 231.
%F A133890 a(n) = binomial(n+10,10) mod 10.
%t A133890 Table[Mod[Binomial[10+n,n],10],{n,0,120}] (* _Harvey P. Dale_, Sep 19 2018 *)
%o A133890 (PARI) a(n)=binomial(n+10,10)%10 \\ _Charles R Greathouse IV_, Nov 22 2011
%Y A133890 Cf. A000040, A133620-A133625, A133630, A038509, A133634-A133636, A133880, A133900, A133910.
%K A133890 nonn,easy
%O A133890 0,3
%A A133890 _Hieronymus Fischer_, Oct 10 2007