268431360
domain: N
Appears in sequences
- Number of irreducible polynomials of degree n over GF(4); dimensions of free Lie algebras.at n=16A027377
- Largest solution of phi(x) = 2^n.at n=26A058215
- Residue C(2^n,n) mod C(2^n,2).at n=15A060430
- Dimensions of primitive Lie algebras connected with the Mantaci-Reutenauer algebra MR^(3).at n=15A185172
- Triangle read by rows, whose row sums using Euler numbers are the unsigned even-indexed Bernoulli numbers (denominators).at n=28A229097
- a(n) = denominator(n / (4^n - 2^n)) for n > 0 and a(0) = 1.at n=16A336899
- Numbers k at which phi(tau(k))/tau(phi(k)) reaches a record high.at n=11A346574