T(m,n) is the number of linear extensions of n fork-join DAGs of width m, read by downward antidiagonals.

A357297

T(m,n) is the number of linear extensions of n fork-join DAGs of width m, read by downward antidiagonals.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =6a(4) =1a(5) =1a(6) =90a(7) =20a(8) =2a(9) =1a(10) =2520a(11) =1680a(12) =280a(13) =6a(14) =1a(15) =113400a(16) =369600a(17) =277200a(18) =9072a(19) =24a(20) =1a(21) =7484400a(22) =168168000a(23) =1009008000a(24) =163459296a(25) =532224a(26) =120a(27) =1a(28) =681080400a(29) =137225088000

External references