A convolution triangle of numbers obtained from A036070.

Terms

a(0) =1a(1) =10a(2) =1a(3) =80a(4) =20a(5) =1a(6) =560a(7) =260a(8) =30a(9) =1a(10) =3584a(11) =2720a(12) =540a(13) =40a(14) =1a(15) =21504a(16) =24768a(17) =7480a(18) =920a(19) =50a(20) =1a(21) =122880a(22) =204288a(23) =87552a(24) =15840a(25) =1400a(26) =60a(27) =1a(28) =675840a(29) =1562880