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 A125892 #6 Jul 22 2022 11:42:39
%S A125892 1,1,2,4,7,12,19,32,53,88,145,238,392,645,1061,1746,2873,4726,7774,
%T A125892 12788,21036,34603,56920,93630,154015,253345,416735,685503,1127607,
%U A125892 1854839,3051088,5018839,8255660,13580017,22338233,36744921,60442973,99424705,163547085
%N A125892 a(n) = floor((Pi^2/6)^n).
%t A125892 Table[Floor[(Pi^2/6)^n], {n, 1, 100}]
%Y A125892 Cf. A125890-A125899.
%K A125892 nonn
%O A125892 0,3
%A A125892 _Artur Jasinski_, Dec 13 2006
%E A125892 a(0)=1 prepended by _Alois P. Heinz_, Jul 22 2022