56717domain: NAppears in sequencesLandau's approximation to population of x^2 + y^2 <= 2^n.at n=18A000690Centered octahemioctahedral numbers: a(n) = (4*n^3+24*n^2+8*n+3)/3.at n=33A274974Number of entries in the ninth blocks of all set partitions of [n] when blocks are ordered by increasing lengths.at n=3A332949