A319500 - cp's OEIS frontend

A319500 a(n) is the least m for which A006987(n) = binomial(m,k) for some k, 2 <= k <= m/2.

n	a(n)
1	4
2	5
3	6
4	6
5	7
6	8
7	7
8	9
9	10
10	11
11	8
12	12
13	8
14	13
15	9
16	14
17	15
18	10
19	9
20	17
21	18
22	11
23	19
24	20
25	10
26	12
27	22
28	10
29	23
30	24
31	13
32	25
33	26
34	11
35	27
36	14
37	28
38	29
39	30
40	15
41	11
42	31
43	12
44	32
45	33
46	16
47	34
48	35
49	36
50	37
51	17
52	38
53	13
54	39
55	40
56	12
57	18
58	41
59	42
60	43
61	12
62	44
63	19
64	45
65	14
66	46
67	47
68	48
69	20
70	49
71	50
72	51
73	13
74	52
75	21
76	15
77	53

[4, 5, 6, 6, 7, 8, 7, 9, 10, 11, 8, 12, 8, 13, 9, 14, 15, 10, 9, 17, 18, 11, 19, 20, 10, 12, 22, 10, 23, 24, 13, 25, 26, 11, 27, 14, 28, 29, 30, 15, 11, 31, 12, 32, 33, 16, 34, 35, 36, 37, 17, 38, 13, 39, 40, 12, 18, 41, 42, 43, 12, 44, 19, 45, 14, 46, 47, 48, 20, 49, 50, 51, 13, 52, 21, 15, 53]

cp's OEIS Frontend

A319500 a(n) is the least m for which A006987(n) = binomial(m,k) for some k, 2 <= k <= m/2.

Table of values

List of values

n	a(n)
1	4
2	5
3	6
4	6
5	7
6	8
7	7
8	9
9	10
10	11
11	8
12	12
13	8
14	13
15	9
16	14
17	15
18	10
19	9
20	17
21	18
22	11
23	19
24	20
25	10
26	12
27	22
28	10
29	23
30	24
31	13
32	25
33	26
34	11
35	27
36	14
37	28
38	29
39	30
40	15
41	11
42	31
43	12
44	32
45	33
46	16
47	34
48	35
49	36
50	37
51	17
52	38
53	13
54	39
55	40
56	12
57	18
58	41
59	42
60	43
61	12
62	44
63	19
64	45
65	14
66	46
67	47
68	48
69	20
70	49
71	50
72	51
73	13
74	52
75	21
76	15
77	53

n	a(n)
1	4
2	5
3	6
4	6
5	7
6	8
7	7
8	9
9	10
10	11
11	8
12	12
13	8
14	13
15	9
16	14
17	15
18	10
19	9
20	17
21	18
22	11
23	19
24	20
25	10
26	12
27	22
28	10
29	23
30	24
31	13
32	25
33	26
34	11
35	27
36	14
37	28
38	29
39	30
40	15
41	11
42	31
43	12
44	32
45	33
46	16
47	34
48	35
49	36
50	37
51	17
52	38
53	13
54	39
55	40
56	12
57	18
58	41
59	42
60	43
61	12
62	44
63	19
64	45
65	14
66	46
67	47
68	48
69	20
70	49
71	50
72	51
73	13
74	52
75	21
76	15
77	53

n	a(n)
1	4
2	5
3	6
4	6
5	7
6	8
7	7
8	9
9	10
10	11
11	8
12	12
13	8
14	13
15	9
16	14
17	15
18	10
19	9
20	17
21	18
22	11
23	19
24	20
25	10
26	12
27	22
28	10
29	23
30	24
31	13
32	25
33	26
34	11
35	27
36	14
37	28
38	29
39	30
40	15
41	11
42	31
43	12
44	32
45	33
46	16
47	34
48	35
49	36
50	37
51	17
52	38
53	13
54	39
55	40
56	12
57	18
58	41
59	42
60	43
61	12
62	44
63	19
64	45
65	14
66	46
67	47
68	48
69	20
70	49
71	50
72	51
73	13
74	52
75	21
76	15
77	53