A139184 a(n) = (n! - 9)/9.

79, 559, 4479, 40319, 403199, 4435199, 53222399, 691891199, 9686476799, 145297151999, 2324754431999, 39520825343999, 711374856191999, 13516122267647999, 270322445352959999, 5676771352412159999, 124888969753067519999

Offset: 6

Author

Artur Jasinski, Apr 11 2008

Keywords

• nonn
• easy

Comments

Original name: Natural numbers of the form (n!-9)/9.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 6..300

Crossrefs

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

Programs

GAP

List([6..25],n->(Factorial(n)-9)/9); # Muniru A Asiru, Oct 20 2018

Magma

[(Factorial(n)-9)/9: n in [6..25]]; // Vincenzo Librandi, Jul 20 2011

Maple

seq((factorial(n)-9)/9,n=6..25); # Muniru A Asiru, Oct 20 2018

Mathematica

Table[(n! - 9)/9, {n, 6, 20}]

Extensions

New name from Jon E. Schoenfield, Oct 19 2018