Square root of A203753(n).

Terms

a(0) =1a(1) =1a(2) =6a(3) =12a(4) =147a(5) =441a(6) =8112a(7) =32448a(8) =796005a(9) =3980025a(10) =122054688a(11) =732328128a(12) =26950548807a(13) =188653841649