567210

Appears in sequences

• Triangle read by rows, T(n,k) = {n,k}*h(k), where {n,k} are the Stirling set numbers and h(k) = hypergeom([-k+1,-k],[],1), for n>=0 and 0<=k<=n.at n=49A256549
• Number of ascent sequences of length n with alternating ascents and descents (unaffected by level steps).at n=13A294281