a(n) = numerator of the X-coordinate of n*P where P is the generator [0,0] for rational points on the curve y^2 + y = x^3 - x.
A028940
a(n) = numerator of the X-coordinate of n*P where P is the generator [0,0] for rational points on the curve y^2 + y = x^3 - x.
Terms
- a(0) =0a(1) =1a(2) =-1a(3) =2a(4) =1a(5) =6a(6) =-5a(7) =21a(8) =-20a(9) =161a(10) =116a(11) =1357a(12) =-3741a(13) =18526a(14) =8385a(15) =480106a(16) =-239785a(17) =12551561a(18) =-59997896a(19) =683916417a(20) =1849037896a(21) =51678803961a(22) =-270896443865
External references
- oeis: A028940