A358462 - cp's OEIS frontend

A358462 a(1) = 1, a(2) = -1; for n > 2, a(n) is smallest magnitude nonzero integer which has not appeared such that the quadratic equation a(n-2)x^2 + a(n-1)x + a(n) = 0 has at least one integer root.

n	a(n)
1	1
2	-1
3	-2
4	3
5	2
6	-5
7	-3
8	8
9	-4
10	-12
11	-8
12	4
13	12
14	-16
15	-28
16	44
17	24
18	-20
19	-44
20	-24
21	20
22	56
23	32
24	-88
25	48
26	40
27	-112
28	64
29	176
30	-48
31	-128
32	-64
33	192
34	256
35	-256
36	-512
37	768
38	512
39	-1280
40	-768
41	2048
42	-1024
43	-3072
44	-2048
45	1024
46	3072
47	-4096
48	-7168
49	11264
50	6144
51	-5120
52	-11264
53	-6144
54	5120
55	14336
56	8192

[1, -1, -2, 3, 2, -5, -3, 8, -4, -12, -8, 4, 12, -16, -28, 44, 24, -20, -44, -24, 20, 56, 32, -88, 48, 40, -112, 64, 176, -48, -128, -64, 192, 256, -256, -512, 768, 512, -1280, -768, 2048, -1024, -3072, -2048, 1024, 3072, -4096, -7168, 11264, 6144, -5120, -11264, -6144, 5120, 14336, 8192]

cp's OEIS Frontend

A358462 a(1) = 1, a(2) = -1; for n > 2, a(n) is smallest magnitude nonzero integer which has not appeared such that the quadratic equation a(n-2)x^2 + a(n-1)x + a(n) = 0 has at least one integer root.

Table of values

List of values

cp's OEIS Frontend

A358462 a(1) = 1, a(2) = -1; for n > 2, a(n) is smallest magnitude nonzero integer which has not appeared such that the quadratic equation a(n-2)*x^2 + a(n-1)*x + a(n) = 0 has at least one integer root.

Table of values

List of values

A358462 a(1) = 1, a(2) = -1; for n > 2, a(n) is smallest magnitude nonzero integer which has not appeared such that the quadratic equation a(n-2)x^2 + a(n-1)x + a(n) = 0 has at least one integer root.