Engel expansion of sqrt(Pi) = 1.77245... .

Terms

a(0) =1a(1) =2a(2) =2a(3) =12a(4) =13a(5) =90a(6) =121a(7) =3457a(8) =7372a(9) =42530a(10) =147081a(11) =348753a(12) =1185480a(13) =17262610a(14) =28408922a(15) =87175278a(16) =120293961a(17) =344697955a(18) =634418862a(19) =3889219736a(20) =8965899278a(21) =9695659687a(22) =18962955420a(23) =27004920068a(24) =67070581522