Engel expansion of sqrt(Pi/2).

Terms

a(0) =1a(1) =4a(2) =76a(3) =134a(4) =213a(5) =1649a(6) =1955a(7) =2041a(8) =32363a(9) =217167a(10) =760577a(11) =1633080a(12) =6412486a(13) =24932290a(14) =25544312a(15) =376841489a(16) =426956719a(17) =472747939a(18) =765965856a(19) =2708004694a(20) =5814287795a(21) =14630348817a(22) =21857959576a(23) =92077240148a(24) =184486528542