1059240domain: NAppears in sequencesa(n) = 1*3*5 + 3*5*7 + 5*7*9 + ... (n terms).at n=26A196506Triangular numbers, T(m), that are four-thirds of another triangular number; T(m) such that 3*T(m) = 4*T(k) for some k.at n=3A200999Number of 5 X n 0..1 arrays with rows nondecreasing and antidiagonals unimodal.at n=21A224136