A continued fraction.

Terms

a(0) =0a(1) =1a(2) =1a(3) =3a(4) =4a(5) =11a(6) =136a(7) =283a(8) =419a(9) =1121a(10) =1540a(11) =38081a(12) =39621a(13) =117323a(14) =156944a(15) =431211a(16) =5331476a(17) =11094163a(18) =16425639a(19) =43945441a(20) =60371080a(21) =1492851361a(22) =1553222441a(23) =4599296243a(24) =6152518684a(25) =16904333611a(26) =209004522016a(27) =434913377643a(28) =643917899659