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 A140867 #9 Jun 14 2017 01:07:09
%S A140867 8,33,88,132,1265,768,2657,11413,8755,50965,8453,57258,124486,609703,
%T A140867 791190,955961,826855,984638,2095061,4196516,5776666,6481631,22355042,
%U A140867 42972320,11873562,70956435,47737822,57344057,57651771,191061462
%N A140867 Start of the first run of exactly n integers in A014134.
%H A140867 Donovan Johnson, <a href="/A140867/b140867.txt">Table of n, a(n) for n = 1..56</a> (terms < 10^12)
%o A140867 (PARI) is_A014134(n)=for(k=0,sqrtint(n*2),issquare(n-k*(k+1)/2) && return);1
%o A140867 /* length of run starting at n */
%o A140867 rl(n)=local(t=n);while(is_A014134(n++),);n-t
%o A140867 /* print [ k, a[k] ] as defined above */
%o A140867 {s=0;for(n=1,10^6,is_A014134(n)|next;t=n;while(is_A014134(n++),);bittest(s,n-t)&next;s+=1<<(n-t);print1([n-t,t]","))}
%K A140867 nonn
%O A140867 1,1
%A A140867 _David W. Wilson_, Jan 05 2009
%E A140867 More terms and PARI code from _M. F. Hasler_, Jan 05 2009
%E A140867 a(19)-a(30) from _Donovan Johnson_, Feb 07 2009