A300409 - cp's OEIS frontend

A300409 Number of centered triangular numbers dividing n.

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

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

cp's OEIS Frontend

A300409 Number of centered triangular numbers dividing n.

Table of values

List of values

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

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

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