a(n) is the least prime of the form (3^j*5^k + 1)/2, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.
A337425
a(n) is the least prime of the form (3^j*5^k + 1)/2, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.
Terms
- a(0) =0a(1) =23a(2) =113a(3) =563a(4) =1013a(5) =1823a(6) =70313a(7) =351563a(8) =82013a(9) =410063a(10) =43945313a(11) =1328603a(12) =18452813a(13) =1977539063a(14) =0a(15) =830376563a(16) =538084013a(17) =968551223a(18) =13452100313a(20) =43584805013a(22) =0a(23) =0a(28) =0
External references
- oeis: A337425