A139161 a(n) = prime(n)!/3 + 1.

3, 41, 1681, 13305601, 2075673601, 118562476032001, 40548366802944001, 8617338912961658880001, 2947253997913233984847872000001, 2740946218059307605908520960000001, 4587917697075448348771993193860300800000001, 11150842204387935702723354017813583888384000000001

Offset

2,1

Links

Andrew Howroyd, Table of n, a(n) for n = 2..50

Mathematica

Table[(Prime[n]! + 3)/3, {n, 2, 30}]

Crossrefs

Cf. A139160.

Sequence in context: A012011 A277453 A147797 * A262644 A238990 A192888

Adjacent sequences: A139158 A139159 A139160 * A139162 A139163 A139164

Keyword

nonn

Author

Artur Jasinski, Apr 11 2008

Extensions

a(12) onward from Andrew Howroyd, Oct 29 2025

Status

approved