A330026 - cp's OEIS frontend

A330026 a(n) is the number of integers k > prime(n) such that all rows (after the initial row) of the triangle of absolute differences of the (n+1)-tuple (prime(1), ..., prime(n), k) all start with 1.

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

[1, 1, 2, 2, 5, 4, 5, 4, 5, 6, 10, 9, 8, 5, 8, 7, 15, 12, 14, 17, 12, 15, 11, 16, 16, 18, 13, 14, 14, 21, 45, 29, 34, 26, 32, 25, 25, 25, 22, 20, 26, 20, 32, 24, 33, 23, 38, 48, 36, 34, 40, 30, 31, 30, 37, 31, 33, 39, 37, 38, 32, 48, 41, 44, 36, 52, 54, 43, 43, 51]

cp's OEIS Frontend

A330026 a(n) is the number of integers k > prime(n) such that all rows (after the initial row) of the triangle of absolute differences of the (n+1)-tuple (prime(1), ..., prime(n), k) all start with 1.

Table of values

List of values

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

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

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