Triangle, read by rows, equal to the matrix cube of A113381.

Terms

a(0) =1a(1) =6a(2) =1a(3) =48a(4) =15a(5) =1a(6) =605a(7) =255a(8) =24a(9) =1a(10) =11196a(11) =5630a(12) =624a(13) =33a(14) =1a(15) =280440a(16) =159210a(17) =19484a(18) =1155a(19) =42a(20) =1a(21) =8981460a(22) =5584635a(23) =731664a(24) =46541a(25) =1848a(26) =51a(27) =1a(28) =353283128a(29) =236051661