a(n) = Product_{k=0..n+1} L(k)+4, where L=A000032 (Lucas numbers).
A374660
a(n) = Product_{k=0..n+1} L(k)+4, where L=A000032 (Lucas numbers).
Terms
- a(0) =6a(1) =30a(2) =210a(3) =1680a(4) =18480a(5) =277200a(6) =6098400a(7) =201247200a(8) =10263607200a(9) =821088576000
External references
- oeis: A374660