Engel expansion of cos(1)/(1+cos(1)).

Terms

a(0) =3a(1) =20a(2) =22a(3) =40a(4) =68a(5) =248a(6) =7163a(7) =28663a(8) =50059a(9) =64574a(10) =638169a(11) =761733a(12) =2537764a(13) =2925739a(14) =3363073a(15) =4977902a(16) =5646039a(17) =57212854a(18) =159650555a(19) =219684539a(20) =453524713a(21) =459239955a(22) =2002180165a(23) =3234082460a(24) =14965375439a(25) =50298730245a(26) =89316768769a(27) =464076054936a(28) =520232391320