A291109 - cp's OEIS frontend

A291109 Numbers that are not the sum of the squarefree divisors of some natural number.

n	a(n)
1	2
2	5
3	7
4	9
5	10
6	11
7	13
8	15
9	16
10	17
11	19
12	21
13	22
14	23
15	25
16	26
17	27
18	28
19	29
20	31
21	33
22	34
23	35
24	37
25	39
26	40
27	41
28	43
29	45
30	46
31	47
32	49
33	50
34	51
35	52
36	53
37	55
38	57
39	58
40	59
41	61
42	63
43	64
44	65
45	66
46	67
47	69
48	70
49	71
50	73
51	75
52	76
53	77
54	78
55	79
56	81
57	82
58	83
59	85
60	86
61	87
62	88
63	89
64	91
65	92
66	93
67	94
68	95
69	97
70	99
71	100
72	101
73	103
74	105
75	106
76	107
77	109
78	111

[2, 5, 7, 9, 10, 11, 13, 15, 16, 17, 19, 21, 22, 23, 25, 26, 27, 28, 29, 31, 33, 34, 35, 37, 39, 40, 41, 43, 45, 46, 47, 49, 50, 51, 52, 53, 55, 57, 58, 59, 61, 63, 64, 65, 66, 67, 69, 70, 71, 73, 75, 76, 77, 78, 79, 81, 82, 83, 85, 86, 87, 88, 89, 91, 92, 93, 94, 95, 97, 99, 100, 101, 103, 105, 106, 107, 109, 111]

cp's OEIS Frontend

A291109 Numbers that are not the sum of the squarefree divisors of some natural number.

Table of values

List of values

n	a(n)
1	2
2	5
3	7
4	9
5	10
6	11
7	13
8	15
9	16
10	17
11	19
12	21
13	22
14	23
15	25
16	26
17	27
18	28
19	29
20	31
21	33
22	34
23	35
24	37
25	39
26	40
27	41
28	43
29	45
30	46
31	47
32	49
33	50
34	51
35	52
36	53
37	55
38	57
39	58
40	59
41	61
42	63
43	64
44	65
45	66
46	67
47	69
48	70
49	71
50	73
51	75
52	76
53	77
54	78
55	79
56	81
57	82
58	83
59	85
60	86
61	87
62	88
63	89
64	91
65	92
66	93
67	94
68	95
69	97
70	99
71	100
72	101
73	103
74	105
75	106
76	107
77	109
78	111

n	a(n)
1	2
2	5
3	7
4	9
5	10
6	11
7	13
8	15
9	16
10	17
11	19
12	21
13	22
14	23
15	25
16	26
17	27
18	28
19	29
20	31
21	33
22	34
23	35
24	37
25	39
26	40
27	41
28	43
29	45
30	46
31	47
32	49
33	50
34	51
35	52
36	53
37	55
38	57
39	58
40	59
41	61
42	63
43	64
44	65
45	66
46	67
47	69
48	70
49	71
50	73
51	75
52	76
53	77
54	78
55	79
56	81
57	82
58	83
59	85
60	86
61	87
62	88
63	89
64	91
65	92
66	93
67	94
68	95
69	97
70	99
71	100
72	101
73	103
74	105
75	106
76	107
77	109
78	111

n	a(n)
1	2
2	5
3	7
4	9
5	10
6	11
7	13
8	15
9	16
10	17
11	19
12	21
13	22
14	23
15	25
16	26
17	27
18	28
19	29
20	31
21	33
22	34
23	35
24	37
25	39
26	40
27	41
28	43
29	45
30	46
31	47
32	49
33	50
34	51
35	52
36	53
37	55
38	57
39	58
40	59
41	61
42	63
43	64
44	65
45	66
46	67
47	69
48	70
49	71
50	73
51	75
52	76
53	77
54	78
55	79
56	81
57	82
58	83
59	85
60	86
61	87
62	88
63	89
64	91
65	92
66	93
67	94
68	95
69	97
70	99
71	100
72	101
73	103
74	105
75	106
76	107
77	109
78	111