Four times triple factorials (3*n-2)!!! with leading 1 added.
A091541
Four times triple factorials (3*n-2)!!! with leading 1 added.
Terms
- a(0) =1a(1) =4a(2) =4a(3) =16a(4) =112a(5) =1120a(6) =14560a(7) =232960a(8) =4426240a(9) =97377280a(10) =2434432000a(11) =68164096000
External references
- oeis: A091541