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 A065356 #17 Mar 22 2020 08:05:18
%S A065356 6,8,6,9,5,0,9,7,5,9,7,0,1,7,4,3,6,6,7,5,5,3,4,4,7,4,9,0,6,9,4,9,8,6,
%T A065356 0,4,6,7,6,5,9,1,5,0,0,2,9,8,8,7,3,1,6,2,5,1,3,1,2,5,0,2,5,2,5,7,7,0,
%U A065356 9,9,5,6,6,9,4,3,4,1,3,4,9,9,7,3,3,4,8,4,0,2,1,1,8,3,7,9,7,1,8,7,8,6,2,3,8
%N A065356 Final digits of A065355(n) (in reverse order) for sufficiently large n.
%H A065356 Harry J. Smith, <a href="/A065356/b065356.txt">Table of n, a(n) for n = 0..1000</a>
%H A065356 <a href="/index/Fi#final">Index entries for sequences related to final digits of numbers</a>
%F A065356 a(n) = 9-A025016(n), n > 0. - _Vladeta Jovovic_, Nov 02 2001
%o A065356 (PARI) { for (n=0, 1000, f=1; while(f!%10^(n+1)>0, f+=1); x=sum(k=0, f, k!%10^(n+1)); a=(10*(x%10^(n+1)))\10^(n+1); if (n==0, a=3); write("b065356.txt", n, " ", 9 - a) ) } \\ _Harry J. Smith_, Oct 17 2009
%Y A065356 Cf. A025016, A064733, A064734.
%K A065356 base,easy,nonn
%O A065356 0,1
%A A065356 _Floor van Lamoen_, Oct 31 2001
%E A065356 a(60)-a(104) from _Harry J. Smith_, Oct 17 2009