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 A281908 #7 Feb 02 2017 02:28:46
%S A281908 0,1,2,2,3,2,2,3,6,3,3,2,1,0,2,14,13,13,12,8,18,16,14,20,2,23,24,21,
%T A281908 19,22,19,15,21,2,25,6,1,26,25,38,33,4,42,19,34,19,14,38,31,18,22,20,
%U A281908 14,42,29,13,9,44,38,39,31,9,4,9,25,7,63,22,2,17,7,38,27,44,25
%N A281908 a(n) = (Sum_{k=1..n} C(n,k) mod k) mod n.
%H A281908 Michel Marcus, <a href="/A281908/b281908.txt">Table of n, a(n) for n = 1..1000</a>
%F A281908 a(n) = A076541(n) mod n.
%o A281908 (PARI) a(n) = sum(k=1, n, binomial(n, k) % k) % n;
%Y A281908 Cf. A076541, A081371, A280559.
%K A281908 nonn
%O A281908 1,3
%A A281908 _Michel Marcus_, Feb 01 2017