A diagonal of triangle in A008298.
A059357
A diagonal of triangle in A008298.
Terms
- a(0) =1a(1) =18a(2) =215a(3) =2475a(4) =28294a(5) =340116a(6) =4335596a(7) =57773700a(8) =831170736a(9) =12532005288a(10) =201002619168
External references
- oeis: A059357