a(1) = 1; then distinct numbers such that both the product of two successive terms + 1 and the ratio of the larger to the smaller of two successive terms + 1 is a prime.
A084039
a(1) = 1; then distinct numbers such that both the product of two successive terms + 1 and the ratio of the larger to the smaller of two successive terms + 1 is a prime.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =384a(5) =4608a(6) =4a(7) =24a(8) =48a(9) =12a(10) =3a(11) =6a(12) =72a(13) =18a(14) =9a(15) =54a(16) =27a(17) =108a(18) =1296a(19) =648a(20) =324a(21) =162a(22) =2916a(23) =34992a(24) =979776a(25) =7a(26) =28a(27) =112a(28) =448a(29) =8064
External references
- oeis: A084039