a(0) = 2; afterwards a(n) is the least prime greater than a(n-1) such that Omega(a(n-1) + a(n)) = n.

A357713

a(0) = 2; afterwards a(n) is the least prime greater than a(n-1) such that Omega(a(n-1) + a(n)) = n.

Terms

    a(0) =2a(1) =3a(2) =7a(3) =11a(4) =13a(5) =19a(6) =197a(7) =251a(8) =389a(9) =1531a(10) =2053a(11) =3067a(12) =17669a(13) =25339a(14) =66821a(15) =105211a(16) =140549a(17) =318203a(18) =1008901a(19) =1940219a(20) =6710533a(21) =9804539a(22) =12215557a(23) =34970363a(24) =49964293a(25) =75864827a(26) =276456709a(27) =864393979a(28) =1350198533a(29) =2877659899

External references