158514domain: NAppears in sequencesThe number phi_2(n) of Frobenius partitions that allow up to 2 repetitions of an integer in a row.at n=36A053993Number of n X 4 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.at n=18A305178