A138666 - cp's OEIS frontend

A138666 Numbers n such that every sum of consecutive positive numbers ending in n is not prime.

n	a(n)
1	1
2	8
3	14
4	18
5	20
6	25
7	26
8	28
9	32
10	33
11	35
12	38
13	39
14	44
15	46
16	48
17	50
18	56
19	58
20	60
21	62
22	63
23	65
24	68
25	72
26	74
27	77
28	78
29	80
30	81
31	85
32	86
33	88
34	92
35	93
36	94
37	95
38	98
39	102
40	104
41	105
42	108
43	110
44	111
45	116
46	118
47	119
48	122
49	123
50	124
51	125
52	128
53	130
54	133
55	134
56	138
57	140
58	143
59	144
60	145
61	146
62	148

[1, 8, 14, 18, 20, 25, 26, 28, 32, 33, 35, 38, 39, 44, 46, 48, 50, 56, 58, 60, 62, 63, 65, 68, 72, 74, 77, 78, 80, 81, 85, 86, 88, 92, 93, 94, 95, 98, 102, 104, 105, 108, 110, 111, 116, 118, 119, 122, 123, 124, 125, 128, 130, 133, 134, 138, 140, 143, 144, 145, 146, 148]

cp's OEIS Frontend

A138666 Numbers n such that every sum of consecutive positive numbers ending in n is not prime.

Table of values

List of values

n	a(n)
1	1
2	8
3	14
4	18
5	20
6	25
7	26
8	28
9	32
10	33
11	35
12	38
13	39
14	44
15	46
16	48
17	50
18	56
19	58
20	60
21	62
22	63
23	65
24	68
25	72
26	74
27	77
28	78
29	80
30	81
31	85
32	86
33	88
34	92
35	93
36	94
37	95
38	98
39	102
40	104
41	105
42	108
43	110
44	111
45	116
46	118
47	119
48	122
49	123
50	124
51	125
52	128
53	130
54	133
55	134
56	138
57	140
58	143
59	144
60	145
61	146
62	148

n	a(n)
1	1
2	8
3	14
4	18
5	20
6	25
7	26
8	28
9	32
10	33
11	35
12	38
13	39
14	44
15	46
16	48
17	50
18	56
19	58
20	60
21	62
22	63
23	65
24	68
25	72
26	74
27	77
28	78
29	80
30	81
31	85
32	86
33	88
34	92
35	93
36	94
37	95
38	98
39	102
40	104
41	105
42	108
43	110
44	111
45	116
46	118
47	119
48	122
49	123
50	124
51	125
52	128
53	130
54	133
55	134
56	138
57	140
58	143
59	144
60	145
61	146
62	148

n	a(n)
1	1
2	8
3	14
4	18
5	20
6	25
7	26
8	28
9	32
10	33
11	35
12	38
13	39
14	44
15	46
16	48
17	50
18	56
19	58
20	60
21	62
22	63
23	65
24	68
25	72
26	74
27	77
28	78
29	80
30	81
31	85
32	86
33	88
34	92
35	93
36	94
37	95
38	98
39	102
40	104
41	105
42	108
43	110
44	111
45	116
46	118
47	119
48	122
49	123
50	124
51	125
52	128
53	130
54	133
55	134
56	138
57	140
58	143
59	144
60	145
61	146
62	148