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 A278510 #6 Dec 12 2016 09:11:49 %S A278510 0,0,0,2,0,4,0,9,8,7,0,16,0,10,14,28,0,28,0,27,20,15,0,47,24,18,48,38, %T A278510 0,47,0,75,30,23,34,78,0,26,36,78,0,66,0,57,80,31,0,122,48,78,46,68,0, %U A278510 128,50,109,52,38,0,129,0,41,112,186,60,99,0,87,62,109,0,197,0,48,132,98,70,118,0,201,208,53,0,180,76,56,76,164,0,211,84,117,82,61 %N A278510 a(n) = A258851(n) - A056239(n). %H A278510 Antti Karttunen, <a href="/A278510/b278510.txt">Table of n, a(n) for n = 1..10000</a> %F A278510 a(n) = A258851(n) - A056239(n). %Y A278510 Cf. A056239, A258851. %Y A278510 Cf. A008578 (positions of zeros). %K A278510 nonn %O A278510 1,4 %A A278510 _Antti Karttunen_, Dec 11 2016