Triangle, read by rows, equal to the matrix cube of A113370.

Terms

a(0) =1a(1) =3a(2) =1a(3) =15a(4) =12a(5) =1a(6) =136a(7) =168a(8) =21a(9) =1a(10) =1998a(11) =3190a(12) =483a(13) =30a(14) =1a(15) =41973a(16) =80136a(17) =13615a(18) =960a(19) =39a(20) =1a(21) =1166263a(22) =2553162a(23) =469476a(24) =35785a(25) =1599a(26) =48a(27) =1a(28) =40747561a(29) =99579994