|
|
A112856
|
|
Primes of the form (2*n)!/n!+1.
|
|
2
|
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Next term (2*72)!/72!+1 has 146 decimal digits.
|
|
LINKS
|
|
|
MATHEMATICA
|
Select[Table[(2n)!/n!+1, {n, 50}], PrimeQ] (* Harvey P. Dale, Aug 02 2022 *)
|
|
CROSSREFS
|
Cf. A112855 n such that (2*n)!/n!+1 is prime, A112854 primes of the form (2*n)!/n!-1.
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|