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 A076589 #13 Apr 24 2025 10:59:42 %S A076589 1,4,3,20,43,7,32,54,40,86,91,29,10,363,705,169,341,14,181,81,307,574, %T A076589 153,234,175,477,552,9,2550,743,801,2245,239,360,402,44,1985,1682,395, %U A076589 1074,331,285,1278,2097,384,3972,857,2240,146,9736,924,1690,350,1445 %N A076589 First occurrence of n as a term in the continued fraction for sqrt(Pi). %o A076589 (PARI) default(realprecision, 1500); v=contfrac(sqrt(Pi)); a(n)=if(n<0,0,s=1; while(abs(n-component(v,s))>0,s++); s) %Y A076589 Cf. A032523, A058280. %K A076589 nonn %O A076589 1,2 %A A076589 _Benoit Cloitre_, Oct 20 2002