156563domain: NAppears in sequencesNumber of length n+7 0..2 arrays with at most two downsteps in every 7 consecutive neighbor pairs.at n=4A255621Number of length n+5 0..2 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=6A255627Centered heptagonal numbers which are sphenic numbers.at n=25A360183