Triangle, read by rows, equal to the matrix cube of triangle A185620.

Terms

a(0) =1a(1) =3a(2) =1a(3) =6a(4) =3a(5) =1a(6) =16a(7) =12a(8) =3a(9) =1a(10) =60a(11) =55a(12) =18a(13) =3a(14) =1a(15) =305a(16) =315a(17) =118a(18) =24a(19) =3a(20) =1a(21) =1988a(22) =2243a(23) =912a(24) =205a(25) =30a(26) =3a(27) =1a(28) =15951a(29) =19378