A348667 - cp's OEIS frontend

A348667 a(n) is the index of the first 0 term in the following sequence: X(1)=1, X(i+1) = (X(i)+i) mod (n+i). a(n)=-1 if there are no zeros in the X sequence.

n	a(n)
0	2
1	2
2	3
3	19
4	4
5	16
6	7
7	5
8	84
9	467
10	21
11	6
12	51
13	134
14	37
15	75
16	7
17	81
18	113
19	16
20	74
21	403
22	8
23	52
24	12
25	125
26	25
27	163
28	318
29	9
30	305
31	31
32	53
33	17
34	169
35	14
36	60
37	10
38	66
39	36
40	3500
41	15
42	22
43	19
44	42
45	38
46	11
47	34
48	113
49	48
50	130
51	208
52	994
53	1033
54	468
55	17
56	12
57	53
58	307
59	623
60	45
61	173
62	48

[2, 2, 3, 19, 4, 16, 7, 5, 84, 467, 21, 6, 51, 134, 37, 75, 7, 81, 113, 16, 74, 403, 8, 52, 12, 125, 25, 163, 318, 9, 305, 31, 53, 17, 169, 14, 60, 10, 66, 36, 3500, 15, 22, 19, 42, 38, 11, 34, 113, 48, 130, 208, 994, 1033, 468, 17, 12, 53, 307, 623, 45, 173, 48]

cp's OEIS Frontend

A348667 a(n) is the index of the first 0 term in the following sequence: X(1)=1, X(i+1) = (X(i)+i) mod (n+i). a(n)=-1 if there are no zeros in the X sequence.

Table of values

List of values