The fourth left hand column of triangle A167580.
A168305
The fourth left hand column of triangle A167580.
Terms
- a(0) =-15a(1) =-48a(2) =2024a(3) =31616a(4) =274480a(5) =1784320a(6) =9645312a(7) =45735936a(8) =196441344a(9) =780595200a(10) =2912532480a(11) =10315202560a(12) =34963222528a(13) =114140905472a(14) =360716042240
External references
- oeis: A168305