a(0) = a(1) = 1, a(n) = largest natural number m <= a(n-1) + a(n-2) where gcd(m,a(k)) = 1 for all 1 < k <= n-1.

A345020

a(0) = a(1) = 1, a(n) = largest natural number m <= a(n-1) + a(n-2) where gcd(m,a(k)) = 1 for all 1 < k <= n-1.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =7a(6) =11a(7) =17a(8) =23a(9) =37a(10) =59a(11) =89a(12) =139a(13) =227a(14) =361a(15) =587a(16) =947a(17) =1531a(18) =2477a(19) =4007a(20) =6481a(21) =10487a(22) =16963a(23) =27449a(24) =44393a(25) =71837a(26) =116227a(27) =188063a(28) =304289a(29) =492343

External references