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 A133889 #14 Apr 16 2023 22:12:59
%S A133889 1,1,1,4,4,4,1,1,1,2,2,2,8,8,8,2,2,2,3,3,3,3,3,3,3,3,3,4,4,4,7,7,7,4,
%T A133889 4,4,5,5,5,2,2,2,5,5,5,6,6,6,6,6,6,6,6,6,7,7,7,1,1,1,7,7,7,8,8,8,5,5,
%U A133889 5,8,8,8,0,0,0,0,0,0,0,0,0,1,1,1,4,4,4,1,1,1,2,2,2,8,8,8,2,2,2,3,3,3,3,3,3
%N A133889 a(n) = binomial(n+9,n) mod 9.
%C A133889 Periodic with length 9^2 = 81.
%H A133889 <a href="/index/Rec#order_73">Index entries for linear recurrences with constant coefficients</a>, signature (1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1).
%F A133889 a(n) = binomial(n+9,9) mod 9.
%t A133889 Table[Mod[Binomial[n+9,n],9],{n,0,110}] (* _Harvey P. Dale_, Jan 14 2012 *)
%Y A133889 Cf. A000040, A133620-A133625, A133630, A038509, A133634-A133636.
%Y A133889 Cf. A133879, A133880, A133890, A133900, A133910.
%K A133889 nonn
%O A133889 0,4
%A A133889 _Hieronymus Fischer_, Oct 10 2007