a(n) = 2^(n-1)*(n-1)!*(4*n+1).
A158455
a(n) = 2^(n-1)*(n-1)!*(4*n+1).
Terms
- a(0) =5a(1) =18a(2) =104a(3) =816a(4) =8064a(5) =96000a(6) =1336320a(7) =21288960a(8) =381911040a(9) =7617576960a(10) =167215104000
External references
- oeis: A158455
A158455
a(n) = 2^(n-1)*(n-1)!*(4*n+1).