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 A032616 #23 Mar 09 2022 16:46:08 %S A032616 0,0,1,2,5,7,11,15,20,25,31,38,45,53,62,71,81,91,103,114,127,140,154, %T A032616 168,183,198,215,232,249,267,286,305,325,346,367,389,412,435,459,484, %U A032616 509,535,561,588,616,644,673,703,733,764,795,827,860,894 %N A032616 a(n) = floor(n^2/Pi). %F A032616 a(n) = A032615(n^2). - _Michel Marcus_, Jan 30 2022 %t A032616 a[n_]:=Floor[(n^2)/Pi]; (* _Vladimir Joseph Stephan Orlovsky_, Dec 12 2008 *) %o A032616 (PARI) a(n) = n^2\Pi; \\ _Michel Marcus_, Jan 30 2022 %o A032616 (Python) from math import pi %o A032616 print([int(n**2/pi) for n in range(54)]) # _Karl-Heinz Hofmann_, Feb 01 2022 %Y A032616 Cf. A032615. %K A032616 nonn,easy %O A032616 0,4 %A A032616 _Patrick De Geest_, May 15 1998