Triangle read by rows, T(n,k) = (A156791(n-k+1) * (A006973 * 0^(n-k))).

Terms

a(0) =1a(1) =1a(2) =1a(3) =6a(4) =1a(5) =2a(6) =7a(7) =6a(8) =2a(9) =9a(10) =78a(11) =7a(12) =12a(13) =9a(14) =24a(15) =420a(16) =78a(17) =14a(18) =54a(19) =24a(20) =130a(21) =6872a(22) =420a(23) =156a(24) =63a(25) =144a(26) =130a(27) =720a(28) =17253a(29) =6872