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 A241914 #9 May 15 2014 10:21:00 %S A241914 0,0,0,1,0,0,1,2,0,1,0,1,2,3,0,0,1,0,1,2,0,1,2,3,4,0,1,0,1,2,3,4,5,0, %T A241914 1,2,3,0,1,2,0,0,1,2,3,4,5,6,0,1,0,1,2,3,4,5,6,7,0,1,2,0,1,2,3,0,1,2, %U A241914 3,4,0,1,2,3,4,5,6,7,8,0,1,0,1,2,0,1,2,3,4,5,0,1,0,1,2,3,0,1,2,3,4,5,6,7,8,9,0,1,2,0,1,2,3,4,5,6,7,8,9,10,0 %N A241914 After a(1)=0, numbers 0 .. A061395(n)-1, followed by numbers 0 .. A061395(n+1)-1, etc. %H A241914 Antti Karttunen, <a href="/A241914/b241914.txt">Table of n, a(n) for n = 1..10082</a> %F A241914 a(1)=0, a(n) = n - A203623(A241920(n)-1) - 2. %e A241914 Viewed as an irregular table, the sequence is constructed as: %e A241914 "Row" %e A241914 [1] 0; (by convention, a(1)=0) %e A241914 [2] 0; (because A061395(2)=1 (the index of the largest prime factor), we have here terms from 0 to 1-1) %e A241914 [3] 0, 1; (because A061395(3)=2, we have terms from 0 to 2-1) %e A241914 [4] 0; %e A241914 [5] 0, 1, 2; (because A061395(5)=3, we have terms from 0 to 3-1) %e A241914 [6] 0, 1; (because A061395(6)=2, we have terms from 0 to 2-1) %e A241914 [7] 0, 1, 2, 3; (because A061395(7)=4, we have terms from 0 to 4-1) %e A241914 etc. %o A241914 (Scheme) %o A241914 (define (A241914 n) (if (= n 1) 0 (- n (+ 2 (A203623 (- (A241920 n) 1)))))) %Y A241914 One less than A241915. %Y A241914 Cf. A203623, A241920, A241910, A241918. %K A241914 nonn,tabf %O A241914 1,8 %A A241914 _Antti Karttunen_, May 01 2014