84652domain: NAppears in sequencesNumber of real polynomial invariants for the action of 4 copies of U(2) on the fourth tensor power of C^2.at n=10A129550Index of 2^n in A109812.at n=18A305370Numbers k such that A109812(k) AND A109812(k+2) = 0 (where AND denotes the bitwise AND operator).at n=38A352773