175860domain: NAppears in sequencesNumber of ways 2 domicules can be placed on an n X n square.at n=13A243464Numbers k such that 2*10^k - 87 is prime.at n=31A273907Diagonal of rational function 1/(1 - (1 + x*y*z) * (x^3 + y^3 + z^3)).at n=12A361730