A365877 - cp's OEIS frontend

A365877 a(n) is the number of quadratic equations ux^2 + vx + w = 0 with distinct solution sets L != {} and integer coefficients u, v, w, where n >= abs(u) + abs(v) + abs(w) and the sum of the solutions equals the product of the solutions.

n	a(n)
1	1
2	1
3	2
4	3
5	5
6	6
7	9
8	11
9	15
10	17
11	23
12	25
13	32
14	35
15	40
16	44
17	53
18	56
19	66
20	71
21	78
22	83
23	95
24	100
25	111
26	117
27	127
28	134
29	150
30	154
31	171
32	180
33	191
34	199
35	213
36	220
37	240
38	250
39	263
40	272
41	294
42	301
43	324
44	335
45	348
46	360
47	386
48	395
49	419
50	430
51	448
52	461
53	490
54	500
55	522
56	536
57	556
58	571
59	603

[1, 1, 2, 3, 5, 6, 9, 11, 15, 17, 23, 25, 32, 35, 40, 44, 53, 56, 66, 71, 78, 83, 95, 100, 111, 117, 127, 134, 150, 154, 171, 180, 191, 199, 213, 220, 240, 250, 263, 272, 294, 301, 324, 335, 348, 360, 386, 395, 419, 430, 448, 461, 490, 500, 522, 536, 556, 571, 603]

cp's OEIS Frontend

A365877 a(n) is the number of quadratic equations ux^2 + vx + w = 0 with distinct solution sets L != {} and integer coefficients u, v, w, where n >= abs(u) + abs(v) + abs(w) and the sum of the solutions equals the product of the solutions.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	3
5	5
6	6
7	9
8	11
9	15
10	17
11	23
12	25
13	32
14	35
15	40
16	44
17	53
18	56
19	66
20	71
21	78
22	83
23	95
24	100
25	111
26	117
27	127
28	134
29	150
30	154
31	171
32	180
33	191
34	199
35	213
36	220
37	240
38	250
39	263
40	272
41	294
42	301
43	324
44	335
45	348
46	360
47	386
48	395
49	419
50	430
51	448
52	461
53	490
54	500
55	522
56	536
57	556
58	571
59	603

n	a(n)
1	1
2	1
3	2
4	3
5	5
6	6
7	9
8	11
9	15
10	17
11	23
12	25
13	32
14	35
15	40
16	44
17	53
18	56
19	66
20	71
21	78
22	83
23	95
24	100
25	111
26	117
27	127
28	134
29	150
30	154
31	171
32	180
33	191
34	199
35	213
36	220
37	240
38	250
39	263
40	272
41	294
42	301
43	324
44	335
45	348
46	360
47	386
48	395
49	419
50	430
51	448
52	461
53	490
54	500
55	522
56	536
57	556
58	571
59	603

cp's OEIS Frontend

A365877 a(n) is the number of quadratic equations u*x^2 + v*x + w = 0 with distinct solution sets L != {} and integer coefficients u, v, w, where n >= abs(u) + abs(v) + abs(w) and the sum of the solutions equals the product of the solutions.

Table of values

List of values

A365877 a(n) is the number of quadratic equations ux^2 + vx + w = 0 with distinct solution sets L != {} and integer coefficients u, v, w, where n >= abs(u) + abs(v) + abs(w) and the sum of the solutions equals the product of the solutions.

n	a(n)
1	1
2	1
3	2
4	3
5	5
6	6
7	9
8	11
9	15
10	17
11	23
12	25
13	32
14	35
15	40
16	44
17	53
18	56
19	66
20	71
21	78
22	83
23	95
24	100
25	111
26	117
27	127
28	134
29	150
30	154
31	171
32	180
33	191
34	199
35	213
36	220
37	240
38	250
39	263
40	272
41	294
42	301
43	324
44	335
45	348
46	360
47	386
48	395
49	419
50	430
51	448
52	461
53	490
54	500
55	522
56	536
57	556
58	571
59	603