a(1)=1, then a(c) = p and a(p) = c, where c = T_c(r,k) and p = T_p(r,k), and where T_p contains the primes arranged in rows by the prime index chain and T_c contains the composites arranged in rows by the order of compositeness. See Formula.
A135044
a(1)=1, then a(c) = p and a(p) = c, where c = T_c(r,k) and p = T_p(r,k), and where T_p contains the primes arranged in rows by the prime index chain and T_c contains the composites arranged in rows by the order of compositeness. See Formula.
Terms
- a(0) =1a(1) =4a(2) =9a(3) =2a(4) =16a(5) =7a(6) =6a(7) =13a(8) =3a(9) =19a(10) =26a(11) =17a(12) =8a(13) =23a(14) =41a(15) =5a(16) =12a(17) =67a(18) =10a(19) =29a(20) =59a(21) =37a(22) =14a(23) =83a(24) =179a(25) =11a(26) =43a(27) =331a(28) =20a(29) =47
External references
- oeis: A135044