Irregular triangle T(n,k) = A098546(n,k) * A036040(n,k), read by rows, 1 <= k <= A000041(n).

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =3a(5) =9a(6) =1a(7) =4a(8) =24a(9) =18a(10) =24a(11) =1a(12) =5a(13) =50a(14) =100a(15) =100a(16) =150a(17) =50a(18) =1a(19) =6a(20) =90a(21) =225a(22) =150a(23) =300a(24) =1200a(25) =300a(26) =300a(27) =675a(28) =90a(29) =1