v(n+1)/v(n), where v=A203752.A203753v(n+1)/v(n), where v=A203752.Terms a(0) =1a(1) =1a(2) =36a(3) =144a(4) =21609a(5) =194481a(6) =65804544a(7) =1052872704a(8) =633623960025External referencesoeis: A203753