A381710 - cp's OEIS frontend

A381710 a(n) is the number of distinct solution sets to the quadratic equations ux^2 + vx + w = 0 with integer coefficients u, v, w, abs(u) + abs(v) + abs(w) <= n having a negative discriminant.

n	a(n)
1	0
2	1
3	5
4	11
5	25
6	39
7	69
8	99
9	143
10	189
11	265
12	327
13	437
14	529
15	653
16	777
17	965
18	1107
19	1343
20	1531
21	1783
22	2021
23	2367
24	2619
25	3013
26	3343
27	3771
28	4153
29	4707
30	5087
31	5721
32	6229
33	6865
34	7437
35	8197
36	8767
37	9677
38	10391
39	11279
40	12043
41	13155
42	13919
43	15147
44	16101
45	17249
46	18301
47	19763

[0, 1, 5, 11, 25, 39, 69, 99, 143, 189, 265, 327, 437, 529, 653, 777, 965, 1107, 1343, 1531, 1783, 2021, 2367, 2619, 3013, 3343, 3771, 4153, 4707, 5087, 5721, 6229, 6865, 7437, 8197, 8767, 9677, 10391, 11279, 12043, 13155, 13919, 15147, 16101, 17249, 18301, 19763]

cp's OEIS Frontend

A381710 a(n) is the number of distinct solution sets to the quadratic equations ux^2 + vx + w = 0 with integer coefficients u, v, w, abs(u) + abs(v) + abs(w) <= n having a negative discriminant.

Table of values

List of values

cp's OEIS Frontend

A381710 a(n) is the number of distinct solution sets to the quadratic equations u*x^2 + v*x + w = 0 with integer coefficients u, v, w, abs(u) + abs(v) + abs(w) <= n having a negative discriminant.

Table of values

List of values

A381710 a(n) is the number of distinct solution sets to the quadratic equations ux^2 + vx + w = 0 with integer coefficients u, v, w, abs(u) + abs(v) + abs(w) <= n having a negative discriminant.