Engel expansion of log(Pi/2).

Terms

a(0) =3a(1) =3a(2) =16a(3) =36a(4) =211a(5) =971a(6) =1546a(7) =1619a(8) =1676a(9) =2781a(10) =5016a(11) =41282a(12) =342476a(13) =906352a(14) =1023757a(15) =1948794a(16) =7848891a(17) =13836275a(18) =30581008a(19) =38602286a(20) =170598710a(21) =379204788a(22) =619298045a(23) =725045787a(24) =1682291679a(25) =24640189358a(26) =24751265017a(27) =104930341224a(28) =139089631515a(29) =463053103677