A253196 - cp's OEIS frontend

A253196 Irregular array read by rows. T(n,k) is the number of divisors d of n such that k^2 is the greatest square that divides d, n>=1, 1<=k<=A000188(n).

n	a(n)
1	1
2	2
3	2
4	2
5	1
6	2
7	4
8	2
9	2
10	2
11	2
12	0
13	1
14	4
15	2
16	4
17	2
18	2
19	4
20	4
21	2
22	2
23	0
24	1
25	2
26	4
27	0
28	2
29	2
30	4
31	2
32	4
33	4
34	2
35	4
36	4
37	2
38	0
39	0
40	0
41	1
42	4
43	2
44	0
45	2
46	4
47	2
48	2
49	8
50	2
51	2
52	2
53	0
54	2
55	4
56	4
57	4
58	4
59	2
60	2
61	0
62	0
63	1
64	2
65	4
66	4
67	4
68	4
69	2
70	8
71	2
72	4
73	2
74	4
75	0
76	2
77	4
78	2
79	4
80	4
81	0
82	2
83	2
84	0
85	0
86	0
87	0
88	0
89	1
90	4
91	0
92	0
93	0
94	2
95	4
96	4
97	2
98	2
99	4
100	0
101	4
102	4
103	4
104	4
105	4
106	4
107	2
108	8
109	4

[1, 2, 2, 2, 1, 2, 4, 2, 2, 2, 2, 0, 1, 4, 2, 4, 2, 2, 4, 4, 2, 2, 0, 1, 2, 4, 0, 2, 2, 4, 2, 4, 4, 2, 4, 4, 2, 0, 0, 0, 1, 4, 2, 0, 2, 4, 2, 2, 8, 2, 2, 2, 0, 2, 4, 4, 4, 4, 2, 2, 0, 0, 1, 2, 4, 4, 4, 4, 2, 8, 2, 4, 2, 4, 0, 2, 4, 2, 4, 4, 0, 2, 2, 0, 0, 0, 0, 0, 1, 4, 0, 0, 0, 2, 4, 4, 2, 2, 4, 0, 4, 4, 4, 4, 4, 4, 2, 8, 4]

cp's OEIS Frontend

A253196 Irregular array read by rows. T(n,k) is the number of divisors d of n such that k^2 is the greatest square that divides d, n>=1, 1<=k<=A000188(n).

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	2
5	1
6	2
7	4
8	2
9	2
10	2
11	2
12	0
13	1
14	4
15	2
16	4
17	2
18	2
19	4
20	4
21	2
22	2
23	0
24	1
25	2
26	4
27	0
28	2
29	2
30	4
31	2
32	4
33	4
34	2
35	4
36	4
37	2
38	0
39	0
40	0
41	1
42	4
43	2
44	0
45	2
46	4
47	2
48	2
49	8
50	2
51	2
52	2
53	0
54	2
55	4
56	4
57	4
58	4
59	2
60	2
61	0
62	0
63	1
64	2
65	4
66	4
67	4
68	4
69	2
70	8
71	2
72	4
73	2
74	4
75	0
76	2
77	4
78	2
79	4
80	4
81	0
82	2
83	2
84	0
85	0
86	0
87	0
88	0
89	1
90	4
91	0
92	0
93	0
94	2
95	4
96	4
97	2
98	2
99	4
100	0
101	4
102	4
103	4
104	4
105	4
106	4
107	2
108	8
109	4

n	a(n)
1	1
2	2
3	2
4	2
5	1
6	2
7	4
8	2
9	2
10	2
11	2
12	0
13	1
14	4
15	2
16	4
17	2
18	2
19	4
20	4
21	2
22	2
23	0
24	1
25	2
26	4
27	0
28	2
29	2
30	4
31	2
32	4
33	4
34	2
35	4
36	4
37	2
38	0
39	0
40	0
41	1
42	4
43	2
44	0
45	2
46	4
47	2
48	2
49	8
50	2
51	2
52	2
53	0
54	2
55	4
56	4
57	4
58	4
59	2
60	2
61	0
62	0
63	1
64	2
65	4
66	4
67	4
68	4
69	2
70	8
71	2
72	4
73	2
74	4
75	0
76	2
77	4
78	2
79	4
80	4
81	0
82	2
83	2
84	0
85	0
86	0
87	0
88	0
89	1
90	4
91	0
92	0
93	0
94	2
95	4
96	4
97	2
98	2
99	4
100	0
101	4
102	4
103	4
104	4
105	4
106	4
107	2
108	8
109	4

n	a(n)
1	1
2	2
3	2
4	2
5	1
6	2
7	4
8	2
9	2
10	2
11	2
12	0
13	1
14	4
15	2
16	4
17	2
18	2
19	4
20	4
21	2
22	2
23	0
24	1
25	2
26	4
27	0
28	2
29	2
30	4
31	2
32	4
33	4
34	2
35	4
36	4
37	2
38	0
39	0
40	0
41	1
42	4
43	2
44	0
45	2
46	4
47	2
48	2
49	8
50	2
51	2
52	2
53	0
54	2
55	4
56	4
57	4
58	4
59	2
60	2
61	0
62	0
63	1
64	2
65	4
66	4
67	4
68	4
69	2
70	8
71	2
72	4
73	2
74	4
75	0
76	2
77	4
78	2
79	4
80	4
81	0
82	2
83	2
84	0
85	0
86	0
87	0
88	0
89	1
90	4
91	0
92	0
93	0
94	2
95	4
96	4
97	2
98	2
99	4
100	0
101	4
102	4
103	4
104	4
105	4
106	4
107	2
108	8
109	4