Least number expressible as a^2 + p b^2 with positive integers a,b, for each prime p <= prime(n) = A000040(n).
A155714
Least number expressible as a^2 + p b^2 with positive integers a,b, for each prime p <= prime(n) = A000040(n).
Terms
- a(0) =3a(1) =12a(2) =36a(3) =144a(4) =144a(5) =4356a(6) =4356a(7) =4356a(8) =7056a(9) =17424a(10) =176400a(11) =2547216a(12) =2547216a(13) =6290064a(14) =6780816a(15) =6780816a(16) =6780816a(17) =6780816a(18) =93315600a(19) =93315600a(20) =271986064a(21) =271986064a(22) =271986064a(23) =271986064a(24) =271986064a(25) =308213136a(26) =308213136a(27) =308213136
External references
- oeis: A155714