533830domain: NAppears in sequencesT(2n+4,n), array T as in A055794.at n=20A055797Number of monic irreducible polynomials over GF(3) of degree <= n.at n=13A114945Multiplicative orders of 2+-i modulo p == 3 (mod 4) that are congruent to 2 modulo 4.at n=17A385218