356960
domain: N
Appears in sequences
- Number of primitive polynomials of degree n over GF(2) (version 2).at n=22A000020
- Number of primitive polynomials of degree n over GF(2).at n=22A011260
- a(n) = phi(2^prime(n) - 1)/prime(n); a(0) = 0 by convention.at n=9A056743
- Total number of 231 patterns in the set of permutations avoiding 123.at n=9A210064