Third column of triangle A000369: |S2(-3; n+3, 3)|.
A143168
Third column of triangle A000369: |S2(-3; n+3, 3)|.
Terms
- a(0) =1a(1) =18a(2) =345a(3) =7650a(4) =196245a(5) =5755050a(6) =190482705a(7) =7034400450a(8) =286988226525
External references
- oeis: A143168