176736domain: NAppears in sequencesNumbers n such that phi(4n+1) = sigma(n).at n=24A067234Number of 3Xn 0..2 arrays with no element equal to any value at offset (0,-2) (-1,-2) or (-2,-1) and new values introduced in order 0..2.at n=8A275091Expansion of (1 + x + x^2)/(1 - x - 3*x^2 - x^3 + x^4).at n=14A280758