A386440 - OEIS

%I #59 Sep 01 2025 18:01:13

%S 0,0,0,0,2,4,8,0,1,5,8,7,3,4,9,3,8,2,0,7,4,9,1,2,7,8,7,1,7,7,8,4,7,0,

%T 6,9,2,9,5,2,3,8,2,8,0,5,9,6,8,5,1,5,6,7,8,8,2,6,8,6,4,6,2,5,3,3,5,7,

%U 8,9,6,6,5,9,6,3,1,8,9,3,2,4,7,7,1,8,8,5,9,8,7,0,5,2,5,1,8,4,8,1,1,4,9,7

%N Decimal expansion of Sum_{k>=1} 1/(8k)!.

%H Jason Bard, <a href="/A386440/b386440.txt">Table of n, a(n) for n = 0..1003</a>

%H Michael I. Shamos, <a href="http://euro.ecom.cmu.edu/people/faculty/mshamos/cat.pdf">A catalog of the real numbers</a>, (2007). See p. 21. (Erroneously misses a leading zero)

%e 0.00002480158734938207491278717784706929523828059685156788...

%t RealDigits[-1 + HypergeometricPFQ[{}, Range[1, 7]/8, 2^-24], 10, 100][[1]]

%Y Cf. A091131, A195070.

%K nonn,cons

%O 0,5

%A _Jason Bard_, Aug 25 2025