A076981 - cp's OEIS frontend

A076981 Smallest k such that n(n+1)(n+2)...(n+k) is divisible by the product of primes up to n.

n	a(n)
1	0
2	0
3	1
4	2
5	1
6	4
7	3
8	6
9	5
10	4
11	4
12	10
13	9
14	12
15	11
16	10
17	9
18	16
19	15
20	18
21	17
22	16
23	15
24	22
25	21
26	20
27	19
28	18
29	17
30	28
31	27
32	30
33	29
34	28
35	27
36	26
37	25
38	36
39	35
40	34
41	33
42	40
43	39
44	42
45	41
46	40
47	39
48	46
49	45
50	44
51	43
52	42
53	41
54	52
55	51
56	50
57	49
58	48
59	47
60	58
61	57
62	60
63	59
64	58
65	57
66	56
67	55
68	66
69	65
70	64
71	63
72	70
73	69

[0, 0, 1, 2, 1, 4, 3, 6, 5, 4, 4, 10, 9, 12, 11, 10, 9, 16, 15, 18, 17, 16, 15, 22, 21, 20, 19, 18, 17, 28, 27, 30, 29, 28, 27, 26, 25, 36, 35, 34, 33, 40, 39, 42, 41, 40, 39, 46, 45, 44, 43, 42, 41, 52, 51, 50, 49, 48, 47, 58, 57, 60, 59, 58, 57, 56, 55, 66, 65, 64, 63, 70, 69]

cp's OEIS Frontend

A076981 Smallest k such that n(n+1)(n+2)...(n+k) is divisible by the product of primes up to n.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	2
5	1
6	4
7	3
8	6
9	5
10	4
11	4
12	10
13	9
14	12
15	11
16	10
17	9
18	16
19	15
20	18
21	17
22	16
23	15
24	22
25	21
26	20
27	19
28	18
29	17
30	28
31	27
32	30
33	29
34	28
35	27
36	26
37	25
38	36
39	35
40	34
41	33
42	40
43	39
44	42
45	41
46	40
47	39
48	46
49	45
50	44
51	43
52	42
53	41
54	52
55	51
56	50
57	49
58	48
59	47
60	58
61	57
62	60
63	59
64	58
65	57
66	56
67	55
68	66
69	65
70	64
71	63
72	70
73	69

n	a(n)
1	0
2	0
3	1
4	2
5	1
6	4
7	3
8	6
9	5
10	4
11	4
12	10
13	9
14	12
15	11
16	10
17	9
18	16
19	15
20	18
21	17
22	16
23	15
24	22
25	21
26	20
27	19
28	18
29	17
30	28
31	27
32	30
33	29
34	28
35	27
36	26
37	25
38	36
39	35
40	34
41	33
42	40
43	39
44	42
45	41
46	40
47	39
48	46
49	45
50	44
51	43
52	42
53	41
54	52
55	51
56	50
57	49
58	48
59	47
60	58
61	57
62	60
63	59
64	58
65	57
66	56
67	55
68	66
69	65
70	64
71	63
72	70
73	69

cp's OEIS Frontend

A076981 Smallest k such that n*(n+1)*(n+2)*...*(n+k) is divisible by the product of primes up to n.

Table of values

List of values

A076981 Smallest k such that n(n+1)(n+2)...(n+k) is divisible by the product of primes up to n.

n	a(n)
1	0
2	0
3	1
4	2
5	1
6	4
7	3
8	6
9	5
10	4
11	4
12	10
13	9
14	12
15	11
16	10
17	9
18	16
19	15
20	18
21	17
22	16
23	15
24	22
25	21
26	20
27	19
28	18
29	17
30	28
31	27
32	30
33	29
34	28
35	27
36	26
37	25
38	36
39	35
40	34
41	33
42	40
43	39
44	42
45	41
46	40
47	39
48	46
49	45
50	44
51	43
52	42
53	41
54	52
55	51
56	50
57	49
58	48
59	47
60	58
61	57
62	60
63	59
64	58
65	57
66	56
67	55
68	66
69	65
70	64
71	63
72	70
73	69