1864590domain: NAppears in sequencesA084175 interleaved with 2*A084175.at n=23A138477Number of degree n polynomials f with all nonzero coefficients equal to 1 such that f(k) is divisible by 3 for all integers k.at n=24A329479Multiplicative orders of 2+-i modulo p == 3 (mod 4) that are congruent to 2 modulo 4.at n=18A385218