Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = -Sum_{d|n} phi(n/d) * (-k)^d.
A382994
Square array A(n,k), n >= 1, k >= 1, read by antidiagonals downwards, where A(n,k) = -Sum_{d|n} phi(n/d) * (-k)^d.
Terms
- a(0) =1a(1) =2a(2) =0a(3) =3a(4) =-2a(5) =3a(6) =4a(7) =-6a(8) =12a(9) =0a(10) =5a(11) =-12a(12) =33a(13) =-16a(14) =5a(15) =6a(16) =-20a(17) =72a(18) =-84a(19) =40a(20) =0a(21) =7a(22) =-30a(23) =135a(24) =-264a(25) =255a(26) =-60a(27) =7a(28) =8a(29) =-42
External references
- oeis: A382994