3435921408domain: NAppears in sequencesNumber of degree-n irreducible polynomials over GF(4) with trace 0 and subtrace 0.at n=19A074031Expansion of 1/(1-2*x^2-4*x^3). (2,4)-Padovan sequence.at n=33A176739Decimal equivalents of A268229.at n=18A268230