A075557 - cp's OEIS frontend

A075557 a(n) is the smallest odd prime such that (1) a(n) doesn't already appear in the sequence; (2) the n-th partial sum is divisible by n; and (3) the n-th partial sum is relatively prime to n+1.

n	a(n)
1	3
2	5
3	7
4	13
5	37
6	31
7	23
8	17
9	53
10	11
11	251
12	29
13	79
14	43
15	73
16	61
17	97
18	67
19	107
20	173
21	59
22	103
23	199
24	163
25	71
26	149
27	47
28	101
29	509
30	89
31	151
32	283
33	229
34	271
35	211
36	109
37	257
38	113
39	269
40	157
41	241
42	331
43	83
44	389
45	41
46	313
47	1543
48	19
49	307
50	463
51	373
52	277
53	811
54	457
55	137
56	191
57	419
58	311
59	197

[3, 5, 7, 13, 37, 31, 23, 17, 53, 11, 251, 29, 79, 43, 73, 61, 97, 67, 107, 173, 59, 103, 199, 163, 71, 149, 47, 101, 509, 89, 151, 283, 229, 271, 211, 109, 257, 113, 269, 157, 241, 331, 83, 389, 41, 313, 1543, 19, 307, 463, 373, 277, 811, 457, 137, 191, 419, 311, 197]

cp's OEIS Frontend

A075557 a(n) is the smallest odd prime such that (1) a(n) doesn't already appear in the sequence; (2) the n-th partial sum is divisible by n; and (3) the n-th partial sum is relatively prime to n+1.

Table of values

List of values