78750000

Appears in sequences

• a(n) is the n-th quintic factorial number divided by 5.at n=6A034325
• a(n) = (n+1)*a(n-5), with a(0)=a(1)=a(2)=a(3)=a(4)=1.at n=34A081408
• a(n) = 5^n*(n+4)!/n!.at n=6A154128
• The fifth power of the unsigned Lah triangular matrix A105278.at n=21A308282