The number of degree-n^2 polynomials over Z/2Z that can be written as f(f(x)) where f is a polynomial.
A350520
The number of degree-n^2 polynomials over Z/2Z that can be written as f(f(x)) where f is a polynomial.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =14a(5) =32a(6) =60a(7) =128a(8) =248a(9) =512a(10) =1008a(11) =2048a(12) =4064a(13) =8192a(14) =16320a(15) =32768a(16) =65408a(17) =131072a(18) =261888a(19) =524288a(20) =1048064a(21) =2097152a(22) =4193280a(23) =8388608a(24) =16775168a(25) =33554432a(26) =67104768a(27) =134217728a(28) =268427264
External references
- oeis: A350520