72642169600
domain: N
Appears in sequences
- Triple factorial numbers a(n) = n!!!, defined by a(n) = n*a(n-3), a(0) = a(1) = 1, a(2) = 2. Sometimes written n!3.at n=29A007661
- Triple factorial numbers: Product_{k=0..n-1} (3*k+2).at n=10A008544
- Left 3-step factorial (n,-3)!: a(n) = (-1)^n * A008544(n).at n=10A133480
- Triangle read by rows. A generalization of unsigned Lah numbers, called L[3,1].at n=55A290596