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 A371747 #10 Sep 03 2025 23:12:39
%S A371747 1,4,5,2,3,5,3,6,4,2,4,4,9,5,9,7,0,1,5,8,3,4,7,1,3,0,2,2,4,8,5,2,7,4,
%T A371747 8,7,3,3,6,1,2,2,7,9,7,8,8,0,7,9,2,6,3,4,9,6,2,5,3,8,2,7,1,8,4,0,3,6,
%U A371747 8,6,3,0,0,7,8,1,9,4,0,3,1,6,1,0,1,4,0,7,2,0,6,0,1,5,3,6,2,1,2,9
%N A371747 Decimal expansion of Product_{k>=1} 1 / (1 - 1/4^k).
%H A371747 Kelvin Voskuijl, <a href="/A371747/b371747.txt">Table of n, a(n) for n = 1..20000</a>
%F A371747 Equals 1 / A100221.
%e A371747 1.4523536424495970158347130224852748733612...
%t A371747 RealDigits[1/QPochhammer[1/4, 1/4], 10, 100][[1]]
%Y A371747 Cf. A000302, A065446, A100221, A370466, A371748, A371749, A371750.
%K A371747 nonn,cons,changed
%O A371747 1,2
%A A371747 _Ilya Gutkovskiy_, Apr 05 2024