Multifactorial

for 1 .. 5 -> $degree {
    sub mfact($n) { [*] $n, *-$degree ...^ * <= 0 };
    say "$degree: ", map &mfact, 1..10
}

Output:

1: 1 2 6 24 120 720 5040 40320 362880 3628800
2: 1 2 3 8 15 48 105 384 945 3840
3: 1 2 3 4 10 18 28 80 162 280
4: 1 2 3 4 5 12 21 32 45 120
5: 1 2 3 4 5 6 14 24 36 50