Engel expansion of sinh(1/2).

Terms

a(0) =2a(1) =24a(2) =80a(3) =168a(4) =288a(5) =440a(6) =624a(7) =840a(8) =1088a(9) =1368a(10) =1680a(11) =2024a(12) =2400a(13) =2808a(14) =3248a(15) =3720a(16) =4224a(17) =4760a(18) =5328a(19) =5928a(20) =6560a(21) =7224a(22) =7920a(23) =8648a(24) =9408a(25) =10200a(26) =11024a(27) =11880a(28) =12768a(29) =13688