9546508128domain: NAppears in sequencesa(n) is the number of (strict) chains of subspaces with ends 0 and (F_4)^n.at n=6A347842A(n,k) is the sum over all ordered partitions of [n] of k^j for an ordered partition with j inversions; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=61A381426