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 A276576 #7 Sep 15 2016 12:22:26 %S A276576 0,0,4,3,0,8,16,7,17,2,31,6,16,26,42,46,52,1,7,13,25,35,57,61,63,75, %T A276576 83,105,123,129,145,155,22,14,44,52,52,70,76,92,98,106,128,148,160, %U A276576 184,178,184,208,220,224,248,268,284,296,316,328,1,21,33,23,43,51,69,71,91,99,123,125,163,161,181,191,211,229,233,241,241 %N A276576 Column 2 of A276580: a(n) = A276570(A254100(n)); the n-th postludic number modulo the corresponding Ludic number. %H A276576 Antti Karttunen, <a href="/A276576/b276576.txt">Table of n, a(n) for n = 1..4098</a> %H A276576 <a href="/index/Si#sieve">Index entries for sequences generated by sieves</a> %F A276576 a(n) = A276570(A254100(n)) = A254100(n) modulo A003309(1+n). %o A276576 (Scheme) %o A276576 (define (A276576 n) (A276570 (A254100 n))) %o A276576 ;; Which reduces to: %o A276576 (define (A276576 n) (modulo (A254100 n) (A003309 (+ 1 n)))) %Y A276576 Cf. A003309, A254100, A276570. %Y A276576 Column 2 of A276580. %K A276576 nonn %O A276576 1,3 %A A276576 _Antti Karttunen_, Sep 13 2016