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 A276987 #9 Feb 16 2025 08:33:36
%S A276987 1,2,0,8,0,1,9,2,1,8,6,1,7,0,6,1,2,9,4,2,3,7,2,3,1,5,6,9,8,8,7,9,2,0,
%T A276987 5,6,3,0,4,3,9,9,2,5,1,6,7,9,4,0,6,9,1,3,6,6,9,7,9,2,1,5,6,9,6,2,0,8,
%U A276987 1,0,2,1,2,3,5,7,9,0,2,4,8,8,8,7,3,9,5,1,8,4,5,5,1,1,7,8,9,7,5,2
%N A276987 Decimal expansion of (phi-1)_inf = (1/phi)_inf, where (q)_inf is the q-Pochhammer symbol, phi = (1+sqrt(5))/2 is the golden ratio.
%C A276987 (1/phi)_inf appears as a coefficient in asymptotics of A274983, A274985.
%H A276987 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/q-PochhammerSymbol.html">q-Pochhammer Symbol</a>, <a href="https://mathworld.wolfram.com/GoldenRatio.html">Golden Ratio</a>.
%F A276987 (1/phi)_inf = Product_{k > 0} (1 - 1/phi^k).
%e A276987 0.1208019218617061294237231569887920563...
%t A276987 RealDigits[QPochhammer[1/GoldenRatio], 10, 100][[1]]
%Y A276987 Cf. A274983, A274985, A062073, A227681.
%K A276987 nonn,cons
%O A276987 0,2
%A A276987 _Vladimir Reshetnikov_, Sep 24 2016