A139176 a(n) = (n! - 6)/6.

0, 3, 19, 119, 839, 6719, 60479, 604799, 6652799, 79833599, 1037836799, 14529715199, 217945727999, 3487131647999, 59281238015999, 1067062284287999, 20274183401471999, 405483668029439999

Offset: 3

Author

Artur Jasinski, Apr 11 2008

Keywords

• nonn

Comments

Original name: Natural numbers of the form (n!-6)/6.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 3..300

Crossrefs

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

Programs

GAP

List([3..25],n->(Factorial(n)-6)/6); # Muniru A Asiru, Oct 20 2018

Magma

[(Factorial(n)-6)/6: n in [3..25]]; // Vincenzo Librandi, Jul 20 2011

Maple

seq((factorial(n)-6)/6,n=3..25); # Muniru A Asiru, Oct 20 2018

Mathematica

Table[(n! - 6)/6, {n, 3, 20}]

Extensions

New name from Jon E. Schoenfield, Oct 19 2018