OFFSET
1,1
EXAMPLE
2.2546326437516075174660917619423624873602862427910816970143008652092...
MATHEMATICA
RealDigits[N[Sum[1/((n!)^n), {n, 0, Infinity}], 120]] // First (* Michael De Vlieger, Sep 22 2015 *)
PROG
(PARI) suminf(k=0, 1/k!^k) \\ Michel Marcus, Sep 20 2022
CROSSREFS
KEYWORD
AUTHOR
Daniel Suteu, Sep 20 2015
STATUS
approved