243712domain: NAppears in sequencesNumber of length n+4 0..1 arrays with at most one downstep in every 4 consecutive neighbor pairs.at n=16A255988Triangle read by rows: T(n,k) is the number of non-crossing set partitions of {1..5n} into n sets of 5 with k of the sets being a contiguous set of elements.at n=29A334063