561782domain: NAppears in sequencesTriangle read by rows: coefficient of x^n in the power series of x/(1 - m*x - x^2 + x^3 - x^5) in row n, column m=1..n+2.at n=44A117744Numbers n such that phi(n), psi(n) and sigma(n) are simultaneously perfect squares.at n=24A301867