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 A084525 #8 Jul 29 2017 13:06:32 %S A084525 0,1,3,6,9,12,16,20,24,28,32,36,40,44,48,52,56,60,65,70,75,80,85,90, %T A084525 95,100,105,110,115,120,125,130,135,140,145,150,155,160,165,170,175, %U A084525 180,185,190,195,200,205,210,215,220,225,230,235,240,245,250,255,260,265 %N A084525 Partial sums of A084526. %C A084525 For n>=1, (a(n-1)+1,a(n)) = (1,1),(2,3),(4,6),(7,9),(10,12),... gives the starting and ending offsets of the n-th site swap in the sequence A084521. Gives also the positions of 7s (ground states) in A084523. %H A084525 A. Karttunen, <a href="/A084507/a084507.scm.txt">Scheme-program for computing this sequence</a> %Y A084525 Differs from A084515 first time at the 18th term, where A084515(18) = 64, while A084525(18) = 65. Cf. also A084505. %K A084525 nonn %O A084525 0,3 %A A084525 _Antti Karttunen_, Jun 02 2003