OFFSET
1,1
COMMENTS
Conjecture: This number is transcendental. - Zhi-Wei Sun, May 24 2023
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 1..750 (terms 1..100 from Jean-Francois Alcover)
FORMULA
Sum_{n>=1} 1/A000009(n). - Vaclav Kotesovec, Dec 08 2015
EXAMPLE
4.6734445793163451750334174346113053985897...
MATHEMATICA
digits = 100; NSum[1/PartitionsQ[n], {n, 1, Infinity}, NSumTerms -> 15000, WorkingPrecision -> digits+1] // RealDigits[#, 10, digits]& // First
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Jean-François Alcover, Feb 24 2014
STATUS
approved