A140088 Number of primes p such that n!-p is prime.

0, 0, 0, 1, 6, 24, 78, 368, 1902, 11062, 77426, 692414, 6261624, 68889928, 764874856, 9274470290

Offset

0,5

Comments

Equals 2*A062311(n) except when n=3.

Links

Table of n, a(n) for n=0..15.

Crossrefs

Cf. A062311.

Sequence in context: A162583 A259662 A058809 * A359133 A011855 A173031

Adjacent sequences: A140085 A140086 A140087 * A140089 A140090 A140091

Keyword

nonn

Author

Leroy Quet and others, May 02 2008

Extensions

a(14), a(15) from Hans Havermann, Dec 21 2008

Status

approved