A112854 Primes of the form (2*n)!/n!-1.

11, 665279, 3497296636753919999, 1960781468160819415703172080467967999999

Offset

1,1

Comments

Next term (2*114)!/114!-1 has 254 decimal digits.

Links

Table of n, a(n) for n=1..4.

Crossrefs

A112853 gives n such that (2*n)!/n!-1 is prime, A112856 gives primes of the form (2*n)!/n!+1.

Sequence in context: A219013 A243130 A253632 * A211238 A014127 A049192

Adjacent sequences: A112851 A112852 A112853 * A112855 A112856 A112857

Keyword

nonn

Author

Hugo Pfoertner, Sep 25 2005

Status

approved