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 A220662 #11 Apr 17 2013 17:14:15 %S A220662 1,2,2,4,4,6,6,6,9,9,9,12,12,12,15,15,15,18,18,18,21,21,21,24,24,24, %T A220662 24,28,28,28,28,32,32,32,32,36,36,36,36,40,40,40,40,44,44,44,44,48,48, %U A220662 48,48,52,52,52,52,56,56,56,56,60,60,60,60,64,64,64,64,68 %N A220662 Irregular table: row n (n>=1) consists of A084556(n) copies of A130664(n). %C A220662 The term a(n) gives the position of the first term in A030298 which belongs to the same permutation as A030298(n) itself. %H A220662 A. Karttunen, <a href="/A220662/b220662.txt">Rows 1..998 of the irregular table, flattened.</a> %F A220662 a(n) = A130664(A084557(n)) = A084555(A084557(n)-1)+1. %F A220662 a(A130664(n)) = A130664(n). %e A220662 Rows of this irregular table begin as: %e A220662 1; %e A220662 2, 2; %e A220662 4, 4; %e A220662 6, 6, 6; %e A220662 9, 9, 9; %o A220662 (define (A220662 n) (1+ (A084555 (-1+ (A084557 n))))) %Y A220662 Cf. A220663, A220660, A030298. %K A220662 nonn,tabf %O A220662 1,2 %A A220662 _Antti Karttunen_, Dec 18 2012