a(1) = 1; for n>1, a(n) = Sum_{i=1..n-1} a(i)*prime(i).
A109664
a(1) = 1; for n>1, a(n) = Sum_{i=1..n-1} a(i)*prime(i).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =48a(4) =384a(5) =4608a(6) =64512a(7) =1161216a(8) =23224320a(9) =557383680a(10) =16721510400a(11) =535088332800
External references
- oeis: A109664