A139183 a(n) = (n! - 8)/8.

2, 14, 89, 629, 5039, 45359, 453599, 4989599, 59875199, 778377599, 10897286399, 163459295999, 2615348735999, 44460928511999, 800296713215999, 15205637551103999, 304112751022079999

Offset: 4

Author

Artur Jasinski, Apr 11 2008

Keywords

• nonn

Comments

Original name: Natural numbers of the form (n!-8)/8.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 4..300

Crossrefs

Cf. A033312, A139172, A139173, A139174, A139175, A139176, A139177, A139183, A139184.

Programs

GAP

List([4..25],n->(Factorial(n)-8)/8); # Muniru A Asiru, Oct 20 2018

Magma

[(Factorial(n)-8)/8: n in [4..25]]; // Vincenzo Librandi, Jul 20 2011

Maple

seq((factorial(n)-8)/8,n=4..25); # Muniru A Asiru, Oct 20 2018

Mathematica

Table[(n! - 8)/8, {n, 4, 20}]

Extensions

New name from Jon E. Schoenfield, Oct 19 2018