A266114 - cp's OEIS frontend

A266114 Least siblings in A263267-tree: numbers n for which there doesn't exist any k < n such that k - d(k) = n - d(n), where d(n) = A000005(n), the number of divisors of n.

n	a(n)
1	1
2	3
3	5
4	6
5	7
6	8
7	9
8	11
9	13
10	14
11	17
12	18
13	19
14	20
15	22
16	23
17	24
18	25
19	27
20	29
21	31
22	32
23	34
24	35
25	37
26	38
27	40
28	41
29	43
30	44
31	46
32	47
33	49
34	50
35	51
36	53
37	56
38	57
39	58
40	59
41	61
42	62
43	65
44	67
45	68
46	71
47	72
48	73
49	74
50	77
51	79
52	81
53	82
54	83
55	84
56	86
57	87
58	88
59	89
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	101
69	102
70	103
71	104
72	105
73	106
74	107
75	109
76	113
77	114
78	116
79	118
80	119
81	120
82	121
83	123
84	125
85	127
86	128

[1, 3, 5, 6, 7, 8, 9, 11, 13, 14, 17, 18, 19, 20, 22, 23, 24, 25, 27, 29, 31, 32, 34, 35, 37, 38, 40, 41, 43, 44, 46, 47, 49, 50, 51, 53, 56, 57, 58, 59, 61, 62, 65, 67, 68, 71, 72, 73, 74, 77, 79, 81, 82, 83, 84, 86, 87, 88, 89, 92, 93, 94, 95, 96, 97, 98, 99, 101, 102, 103, 104, 105, 106, 107, 109, 113, 114, 116, 118, 119, 120, 121, 123, 125, 127, 128]

cp's OEIS Frontend

A266114 Least siblings in A263267-tree: numbers n for which there doesn't exist any k < n such that k - d(k) = n - d(n), where d(n) = A000005(n), the number of divisors of n.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	6
5	7
6	8
7	9
8	11
9	13
10	14
11	17
12	18
13	19
14	20
15	22
16	23
17	24
18	25
19	27
20	29
21	31
22	32
23	34
24	35
25	37
26	38
27	40
28	41
29	43
30	44
31	46
32	47
33	49
34	50
35	51
36	53
37	56
38	57
39	58
40	59
41	61
42	62
43	65
44	67
45	68
46	71
47	72
48	73
49	74
50	77
51	79
52	81
53	82
54	83
55	84
56	86
57	87
58	88
59	89
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	101
69	102
70	103
71	104
72	105
73	106
74	107
75	109
76	113
77	114
78	116
79	118
80	119
81	120
82	121
83	123
84	125
85	127
86	128

n	a(n)
1	1
2	3
3	5
4	6
5	7
6	8
7	9
8	11
9	13
10	14
11	17
12	18
13	19
14	20
15	22
16	23
17	24
18	25
19	27
20	29
21	31
22	32
23	34
24	35
25	37
26	38
27	40
28	41
29	43
30	44
31	46
32	47
33	49
34	50
35	51
36	53
37	56
38	57
39	58
40	59
41	61
42	62
43	65
44	67
45	68
46	71
47	72
48	73
49	74
50	77
51	79
52	81
53	82
54	83
55	84
56	86
57	87
58	88
59	89
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	101
69	102
70	103
71	104
72	105
73	106
74	107
75	109
76	113
77	114
78	116
79	118
80	119
81	120
82	121
83	123
84	125
85	127
86	128

n	a(n)
1	1
2	3
3	5
4	6
5	7
6	8
7	9
8	11
9	13
10	14
11	17
12	18
13	19
14	20
15	22
16	23
17	24
18	25
19	27
20	29
21	31
22	32
23	34
24	35
25	37
26	38
27	40
28	41
29	43
30	44
31	46
32	47
33	49
34	50
35	51
36	53
37	56
38	57
39	58
40	59
41	61
42	62
43	65
44	67
45	68
46	71
47	72
48	73
49	74
50	77
51	79
52	81
53	82
54	83
55	84
56	86
57	87
58	88
59	89
60	92
61	93
62	94
63	95
64	96
65	97
66	98
67	99
68	101
69	102
70	103
71	104
72	105
73	106
74	107
75	109
76	113
77	114
78	116
79	118
80	119
81	120
82	121
83	123
84	125
85	127
86	128