A210280 (7n)!/7^n.

1, 720, 1779148800, 148953184174080000, 126983900296423931904000000, 614812159599342234168301977600000000, 11942354952042770431904585727413846016000000000

Offset: 0

Author

Mohammad K. Azarian, Apr 12 2012

Keywords

• nonn
• easy

Links

• Vincenzo Librandi, Table of n, a(n) for n = 0..60

Crossrefs

Cf. A210279, A210278, A210277, A000680, A067630, A084939, A084940, A084941, A084942, A084943, A084944, A087127, A001147, A132101

Programs

Magma

[Factorial(7*n)/7^n: n in [0..10]]; // Vincenzo Librandi, Feb 15 2013

Mathematica

Table[(7 n)!/7^n, {n, 0, 10}] (* Vincenzo Librandi, Feb 15 2013 *)

Formula

E.g.f.: 1/(1-x^7/7).