A384008 - cp's OEIS frontend

A384008 Irregular triangle read by rows where row n lists the first differences of the 0-prepended prime indices of the n-th squarefree number.

n	a(n)
1	1
2	2
3	3
4	1
5	1
6	4
7	1
8	2
9	5
10	6
11	1
12	3
13	2
14	1
15	7
16	8
17	2
18	2
19	1
20	4
21	9
22	1
23	5
24	10
25	1
26	1
27	1
28	11
29	2
30	3
31	1
32	6
33	3
34	1
35	12
36	1
37	7
38	2
39	4
40	13
41	1
42	1
43	2
44	14
45	1
46	8
47	15
48	2
49	5
50	16
51	3
52	2
53	2
54	6
55	1
56	9
57	17
58	18
59	1
60	10
61	3
62	3
63	1
64	1
65	3
66	19
67	2
68	7
69	1
70	2
71	1
72	20
73	21
74	1
75	11
76	4
77	1
78	1
79	1
80	4
81	22
82	1
83	12
84	23
85	3
86	4

[1, 2, 3, 1, 1, 4, 1, 2, 5, 6, 1, 3, 2, 1, 7, 8, 2, 2, 1, 4, 9, 1, 5, 10, 1, 1, 1, 11, 2, 3, 1, 6, 3, 1, 12, 1, 7, 2, 4, 13, 1, 1, 2, 14, 1, 8, 15, 2, 5, 16, 3, 2, 2, 6, 1, 9, 17, 18, 1, 10, 3, 3, 1, 1, 3, 19, 2, 7, 1, 2, 1, 20, 21, 1, 11, 4, 1, 1, 1, 4, 22, 1, 12, 23, 3, 4]

cp's OEIS Frontend

A384008 Irregular triangle read by rows where row n lists the first differences of the 0-prepended prime indices of the n-th squarefree number.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	1
5	1
6	4
7	1
8	2
9	5
10	6
11	1
12	3
13	2
14	1
15	7
16	8
17	2
18	2
19	1
20	4
21	9
22	1
23	5
24	10
25	1
26	1
27	1
28	11
29	2
30	3
31	1
32	6
33	3
34	1
35	12
36	1
37	7
38	2
39	4
40	13
41	1
42	1
43	2
44	14
45	1
46	8
47	15
48	2
49	5
50	16
51	3
52	2
53	2
54	6
55	1
56	9
57	17
58	18
59	1
60	10
61	3
62	3
63	1
64	1
65	3
66	19
67	2
68	7
69	1
70	2
71	1
72	20
73	21
74	1
75	11
76	4
77	1
78	1
79	1
80	4
81	22
82	1
83	12
84	23
85	3
86	4

n	a(n)
1	1
2	2
3	3
4	1
5	1
6	4
7	1
8	2
9	5
10	6
11	1
12	3
13	2
14	1
15	7
16	8
17	2
18	2
19	1
20	4
21	9
22	1
23	5
24	10
25	1
26	1
27	1
28	11
29	2
30	3
31	1
32	6
33	3
34	1
35	12
36	1
37	7
38	2
39	4
40	13
41	1
42	1
43	2
44	14
45	1
46	8
47	15
48	2
49	5
50	16
51	3
52	2
53	2
54	6
55	1
56	9
57	17
58	18
59	1
60	10
61	3
62	3
63	1
64	1
65	3
66	19
67	2
68	7
69	1
70	2
71	1
72	20
73	21
74	1
75	11
76	4
77	1
78	1
79	1
80	4
81	22
82	1
83	12
84	23
85	3
86	4

n	a(n)
1	1
2	2
3	3
4	1
5	1
6	4
7	1
8	2
9	5
10	6
11	1
12	3
13	2
14	1
15	7
16	8
17	2
18	2
19	1
20	4
21	9
22	1
23	5
24	10
25	1
26	1
27	1
28	11
29	2
30	3
31	1
32	6
33	3
34	1
35	12
36	1
37	7
38	2
39	4
40	13
41	1
42	1
43	2
44	14
45	1
46	8
47	15
48	2
49	5
50	16
51	3
52	2
53	2
54	6
55	1
56	9
57	17
58	18
59	1
60	10
61	3
62	3
63	1
64	1
65	3
66	19
67	2
68	7
69	1
70	2
71	1
72	20
73	21
74	1
75	11
76	4
77	1
78	1
79	1
80	4
81	22
82	1
83	12
84	23
85	3
86	4