A062702 Index of factorial primes of form m!-1.

3, 9, 128, 675, 25306287, 3610490805

Offset

1,1

Links

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

Formula

a(n) = PrimePi(A002982(n)!-1) = A000720(A055490(n)).

Example

The exact subscript of 7th prime [=30!-1=265252859812191058636308479999999] is not yet available.

Crossrefs

Cf. A002981, A002982, A055490.

Sequence in context: A291704 A351264 A082606 * A289169 A257032 A141143

Adjacent sequences: A062699 A062700 A062701 * A062703 A062704 A062705

Keyword

hard,nonn

Author

Labos Elemer, Jul 11 2001

Extensions

Offset 1 from Michel Marcus, Aug 29 2019

Status

approved