Triangle read by rows: absolute values of odd-numbered rows of A225433.

Terms

a(0) =1a(1) =1a(2) =38a(3) =1a(4) =1a(5) =676a(6) =4806a(7) =676a(8) =1a(9) =1a(10) =10914a(11) =362895a(12) =1346780a(13) =362895a(14) =10914a(15) =1a(16) =1a(17) =174752a(18) =20554588a(19) =263879264a(20) =683233990a(21) =263879264a(22) =20554588a(23) =174752a(24) =1a(25) =1a(26) =2796190a(27) =1063096365a(28) =35677598760a(29) =267248150610