191219367936
domain: N
Appears in sequences
- Number of degree-n irreducible polynomials over GF(4) with trace 0 and subtrace 1.at n=22A074032
- Number of degree-n irreducible polynomials over GF(4) with trace 1 and subtrace 0.at n=22A074033
- Let a = RootOf( x^2+x+1 ) and b = 1+a. Number of degree-n irreducible polynomials over GF(4) with trace 1 and subtrace a.at n=22A074035
- Number of 4-ary Lyndon words of length n over GF(4) with trace 0 and subtrace 1.at n=22A074447
- Number of 4-ary Lyndon words of length n over GF(4) with trace 1 and subtrace 0.at n=22A074448
- Let x = RootOf(z^2 + z + 1) and y = 1+x. Number of 4-ary Lyndon words of length n over GF(4) with trace 1 and subtrace x.at n=22A074450
- Index of the closure of a triangle group Delta, associated with billiards in a regular n-gon, in the adelic group Gamma = SL_2(O), where O is the profinite completion of Z[zeta + zeta^{-1}] and zeta is the n-th root of unity.at n=20A374898