Smallest k such that the number of composites of the form a^2 + 1 between two successive primes of this form equals 2n-1.
A208132
Smallest k such that the number of composites of the form a^2 + 1 between two successive primes of this form equals 2n-1.
Terms
- a(0) =2a(1) =4a(2) =17a(3) =15a(4) =10a(5) =26a(6) =12a(7) =19a(8) =112a(9) =34a(10) =163a(11) =91a(12) =101a(13) =135a(14) =303a(15) =97a(16) =54a(17) =229a(18) =459a(19) =70a(20) =679a(21) =1075a(22) =340a(23) =1041a(24) =550a(25) =836a(26) =1308a(27) =2780a(28) =606a(29) =875
External references
- oeis: A208132