Least k such that prime(n)*(k^2) + prime(n)*k + 1 = m^2 = a square.
A105263
Least k such that prime(n)*(k^2) + prime(n)*k + 1 = m^2 = a square.
Terms
- a(0) =3a(1) =7a(2) =8a(3) =15a(4) =39a(5) =7a(6) =8a(7) =8a(8) =335a(9) =32a(10) =55a(11) =24a(12) =704a(13) =39a(14) =1631a(15) =87a(16) =15a(17) =15a(18) =16a(19) =9235919a(20) =119a(21) =4959a(22) =5247a(23) =56a(24) =39a(25) =80a(26) =40a(27) =746511a(28) =104a(29) =488880
External references
- oeis: A105263