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 A286368 #7 May 09 2017 00:06:45 %S A286368 3,2,0,3,2,0,4,2,3,2,0,0,2,0,4,3,2,2,0,2,0,0,4,0,3,2,0,4,2,0,4,2,0,2, %T A286368 0,3,2,0,4,2,2,0,0,0,2,0,4,0,3,2,0,2,2,0,4,0,0,2,0,4,2,0,4,3,2,0,0,2, %U A286368 0,0,4,2,2,2,0,0,0,0,4,2,3,2,0,0,2,0,4,0,2,2,0,4,0,0,4,0,2,2,0,3,2,0,4,2,0,2,0,0,2,0,4,4,2,0,0,2,2,0,4,0 %N A286368 a(n) = 4*A072401(n) + 2*A229062(n) + A010052(n). %C A286368 Partitions natural numbers to the same equivalence classes as A002828. That is, for all i, j: a(i) = a(j) <=> A002828(i) = A002828(j). To get A002828 replace 0's with 3's, 3's with 1's and keep 2's as 2's and 4's as 4's. %H A286368 Antti Karttunen, <a href="/A286368/b286368.txt">Table of n, a(n) for n = 1..10000</a> %F A286368 a(n) = 4*A072401(n) + 2*A229062(n) + A010052(n). %o A286368 (Scheme) (define (A286368 n) (+ (* 4 (A072401 n)) (* 2 (A229062 n)) (A010052 n))) %Y A286368 Cf. A002828, A010052, A072401, A229062, A286366. %K A286368 nonn %O A286368 1,1 %A A286368 _Antti Karttunen_, May 08 2017