A036431 - cp's OEIS frontend

A036431 a(n) = number of positive integers b which, when added to the number of their divisors, tau(b), gives n.

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

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

cp's OEIS Frontend

A036431 a(n) = number of positive integers b which, when added to the number of their divisors, tau(b), gives n.

Table of values

List of values

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

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

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