149960domain: NAppears in sequencesNumbers n such that phi(4n+1) = sigma(n).at n=22A067234Number of length n+5 0..3 arrays with at most one downstep in every 5 consecutive neighbor pairs.at n=5A258727Number of length n+6 0..3 arrays with at most one downstep in every n consecutive neighbor pairs.at n=4A258736