A263087 - cp's OEIS frontend

A263087 a(n) = A060990(n^2); number of solutions to x - d(x) = n^2, where d(x) is the number of divisors of x (A000005).

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

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

cp's OEIS Frontend

A263087 a(n) = A060990(n^2); number of solutions to x - d(x) = n^2, where d(x) is the number of divisors of x (A000005).

Table of values

List of values

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

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

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