A028940 - cp's OEIS frontend

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.

n	a(n)
1	0
2	1
3	-1
4	2
5	1
6	6
7	-5
8	21
9	-20
10	161
11	116
12	1357
13	-3741
14	18526
15	8385
16	480106
17	-239785
18	12551561
19	-59997896
20	683916417
21	1849037896
22	51678803961
23	-270896443865
24	4881674119706
25	-16683000076735
26	997454379905326

[0, 1, -1, 2, 1, 6, -5, 21, -20, 161, 116, 1357, -3741, 18526, 8385, 480106, -239785, 12551561, -59997896, 683916417, 1849037896, 51678803961, -270896443865, 4881674119706, -16683000076735, 997454379905326]

cp's OEIS Frontend

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.

Table of values

List of values