1,1

Next term (2*72)!/72!+1 has 146 decimal digits.

Table of n, a(n) for n=1..6.

Cf. A112855 n such that (2*n)!/n!+1 is prime, A112854 primes of the form (2*n)!/n!-1.

Sequence in context: A087333 A320041 A016104 * A007523 A092830 A317481

Adjacent sequences: A112853 A112854 A112855 * A112857 A112858 A112859

nonn

Hugo Pfoertner, Sep 25 2005

approved