A227053 a(n) = (n^3)! / (n^3-n)! = number of ways of placing n labeled balls into n^3 labeled boxes with at most one ball in each box.

1, 1, 56, 17550, 15249024, 28143753000, 94689953674560, 525169893772283760, 4469844204191484518400, 55337211594165488805417600, 955860613004397508326213120000, 22282564877342299983672172489536000, 682182070950002359574696677978908672000, 26812831292465310201469047550286967518976000

Offset: 0

Author

Alex Ratushnyak, Jun 29 2013

Keywords

• nonn
• easy

Crossrefs

Cf. A107444, A158362.

Programs

Python

import math
for n in range(20):
  print(math.factorial(n**3)//math.factorial(n**3-n), end=', ')