Image of Euler totient function (A000010) under "little Hankel" transform that sends [c_0, c_1, ...] to [d_0, d_1, ...] where d_n = c_n^2 - c_{n+1}*c_{n-1}.
A056228
Image of Euler totient function (A000010) under "little Hankel" transform that sends [c_0, c_1, ...] to [d_0, d_1, ...] where d_n = c_n^2 - c_{n+1}*c_{n-1}.
Terms
- a(0) =-1a(1) =2a(2) =-4a(3) =12a(4) =-20a(5) =28a(6) =-20a(7) =20a(8) =-44a(9) =84a(10) =-104a(11) =120a(12) =-60a(13) =16a(14) =-64a(15) =208a(16) =-252a(17) =276a(18) =-152a(19) =64a(20) =-164a(21) =404a(22) =-376a(23) =304a(24) =-216a(25) =180a(26) =-360a(27) =688a(28) =-776a(29) =772
External references
- oeis: A056228