A387030 - cp's OEIS frontend

A387030 Irregular triangle read by rows: T(n,k) is the number of primes in the k-th 2-dense sublist of divisors of n, with n >= 1, k >= 1.

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	2
9	0
10	1
11	1
12	0
13	1
14	0
15	1
16	1
17	0
18	1
19	2
20	0
21	1
22	1
23	1
24	0
25	2
26	0
27	1
28	0
29	1
30	2
31	0
32	1
33	2
34	0
35	1
36	1
37	0
38	1
39	1
40	0
41	1
42	2
43	0
44	1
45	0
46	1
47	1
48	0
49	1
50	0
51	0
52	2
53	0
54	1
55	3
56	0
57	1
58	1
59	0
60	1
61	1
62	0
63	1
64	1
65	0
66	2
67	0
68	2
69	0
70	1
71	1
72	1
73	0
74	1
75	1
76	0
77	2
78	0
79	1
80	3
81	0
82	1
83	1
84	1
85	0
86	2
87	0
88	1
89	1
90	0
91	1
92	2
93	0
94	1
95	0
96	1
97	1
98	0
99	0
100	1
101	1
102	0
103	1
104	1
105	0
106	1

[0, 1, 0, 1, 1, 0, 1, 2, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 2, 0, 1, 1, 1, 0, 2, 0, 1, 0, 1, 2, 0, 1, 2, 0, 1, 1, 0, 1, 1, 0, 1, 2, 0, 1, 0, 1, 1, 0, 1, 0, 0, 2, 0, 1, 3, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 2, 0, 2, 0, 1, 1, 1, 0, 1, 1, 0, 2, 0, 1, 3, 0, 1, 1, 1, 0, 2, 0, 1, 1, 0, 1, 2, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1]

cp's OEIS Frontend

A387030 Irregular triangle read by rows: T(n,k) is the number of primes in the k-th 2-dense sublist of divisors of n, with n >= 1, k >= 1.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	2
9	0
10	1
11	1
12	0
13	1
14	0
15	1
16	1
17	0
18	1
19	2
20	0
21	1
22	1
23	1
24	0
25	2
26	0
27	1
28	0
29	1
30	2
31	0
32	1
33	2
34	0
35	1
36	1
37	0
38	1
39	1
40	0
41	1
42	2
43	0
44	1
45	0
46	1
47	1
48	0
49	1
50	0
51	0
52	2
53	0
54	1
55	3
56	0
57	1
58	1
59	0
60	1
61	1
62	0
63	1
64	1
65	0
66	2
67	0
68	2
69	0
70	1
71	1
72	1
73	0
74	1
75	1
76	0
77	2
78	0
79	1
80	3
81	0
82	1
83	1
84	1
85	0
86	2
87	0
88	1
89	1
90	0
91	1
92	2
93	0
94	1
95	0
96	1
97	1
98	0
99	0
100	1
101	1
102	0
103	1
104	1
105	0
106	1

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	2
9	0
10	1
11	1
12	0
13	1
14	0
15	1
16	1
17	0
18	1
19	2
20	0
21	1
22	1
23	1
24	0
25	2
26	0
27	1
28	0
29	1
30	2
31	0
32	1
33	2
34	0
35	1
36	1
37	0
38	1
39	1
40	0
41	1
42	2
43	0
44	1
45	0
46	1
47	1
48	0
49	1
50	0
51	0
52	2
53	0
54	1
55	3
56	0
57	1
58	1
59	0
60	1
61	1
62	0
63	1
64	1
65	0
66	2
67	0
68	2
69	0
70	1
71	1
72	1
73	0
74	1
75	1
76	0
77	2
78	0
79	1
80	3
81	0
82	1
83	1
84	1
85	0
86	2
87	0
88	1
89	1
90	0
91	1
92	2
93	0
94	1
95	0
96	1
97	1
98	0
99	0
100	1
101	1
102	0
103	1
104	1
105	0
106	1

n	a(n)
1	0
2	1
3	0
4	1
5	1
6	0
7	1
8	2
9	0
10	1
11	1
12	0
13	1
14	0
15	1
16	1
17	0
18	1
19	2
20	0
21	1
22	1
23	1
24	0
25	2
26	0
27	1
28	0
29	1
30	2
31	0
32	1
33	2
34	0
35	1
36	1
37	0
38	1
39	1
40	0
41	1
42	2
43	0
44	1
45	0
46	1
47	1
48	0
49	1
50	0
51	0
52	2
53	0
54	1
55	3
56	0
57	1
58	1
59	0
60	1
61	1
62	0
63	1
64	1
65	0
66	2
67	0
68	2
69	0
70	1
71	1
72	1
73	0
74	1
75	1
76	0
77	2
78	0
79	1
80	3
81	0
82	1
83	1
84	1
85	0
86	2
87	0
88	1
89	1
90	0
91	1
92	2
93	0
94	1
95	0
96	1
97	1
98	0
99	0
100	1
101	1
102	0
103	1
104	1
105	0
106	1