A139155 a(n) = (n!+8)/8.

4, 16, 91, 631, 5041, 45361, 453601, 4989601, 59875201, 778377601, 10897286401, 163459296001, 2615348736001, 44460928512001, 800296713216001, 15205637551104001, 304112751022080001, 6386367771463680001

Offset: 4

Author

Artur Jasinski, Apr 11 2008

Keywords

• nonn

Links

• Amiram Eldar, Table of n, a(n) for n = 4..450

Crossrefs

Cf. A007749, A020458, A082672, A089085, A089130, A117141, A139056-A139066, A139068, A137390, A139070-A139075, A139148-A139157, A139159, A139160, A139161, A139162.

Programs

Mathematica

Table[(n! + 8)/8, {n, 4, 30}]

Extensions

Name corrected by Amiram Eldar, Oct 14 2024