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%I #22 Jan 07 2022 11:11:49
%S 8,8,9,0,0,0,3,5,4,9,6,9,5,2,3,0,1,3,9,3,4,6,7,1,9,6,9,0,8,7,9,1,2,9,
%T 3,1,0,5,3,8,4,8,0,2,1,0,1,7,9,5,4,3,4,1,4,5,4,3,4,6,5,3,7,0,0,3,2,3,
%U 9,6,3,5,0,8,5,2,5,3,1,2,8,6,1,1,0,9,8
%N Solution to Popular Computing Problem 56 (decimal).
%C See link for precise definition. This is the constant in A257341 written in base 10.
%H Chai Wah Wu, <a href="/A257342/b257342.txt">Table of n, a(n) for n = 0..10000</a>
%H Popular Computing (Calabasas, CA), <a href="/A257341/a257341.png">Solution to Problem 56</a>, Vol. 4 (No. 39, June 1976), page PC39-3 [Annotated and scanned copy]
%e 0.88900035496952301393467196908791293...
%o (Python)
%o from fractions import Fraction
%o from math import log10
%o A257342_list, m, y = [], 2, Fraction(0,1)
%o for i in range(2,100):
%o for j in range(1,i):
%o x = Fraction(j,i)
%o if x.denominator == i:
%o y += Fraction(int(m*x) % 2,m)
%o m *= 2
%o for i in range(int(log10(m))-2):
%o y *= 10
%o A257342_list.append(int(y) % 10) # _Chai Wah Wu_, Apr 29 2015
%Y Cf. A020652, A038567, A257341.
%K nonn,cons
%O 0,1
%A _N. J. A. Sloane_, Apr 27 2015
%E More terms from _Chai Wah Wu_, Apr 29 2015
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