a(n+2) is the smallest odd prime such that a(n) is the smallest odd prime divisor of a(n+1)+a(n+2), starting with a(1) = 11 and a(2) = 19.

A352955

a(n+2) is the smallest odd prime such that a(n) is the smallest odd prime divisor of a(n+1)+a(n+2), starting with a(1) = 11 and a(2) = 19.

Terms

    a(0) =11a(1) =19a(2) =3a(3) =73a(4) =5a(5) =1163a(6) =17a(7) =2309a(8) =3a(9) =147773a(10) =7a(11) =2364361a(12) =43a(13) =75659509a(14) =109a(15) =605275963a(16) =601a(18) =2767a(20) =145687a(22) =10273a(24) =5036623

External references