A061782 - cp's OEIS frontend

A061782 a(n) = smallest positive number m such that m*n is a triangular number.

n	a(n)
1	1
2	3
3	1
4	7
5	2
6	1
7	3
8	15
9	4
10	1
11	5
12	3
13	6
14	2
15	1
16	31
17	8
18	2
19	9
20	6
21	1
22	3
23	11
24	5
25	12
26	3
27	13
28	1
29	14
30	4
31	15
32	63
33	2
34	4
35	3
36	1
37	18
38	5
39	2
40	3
41	20
42	5
43	21
44	12
45	1
46	6
47	23
48	11
49	24
50	6
51	3
52	15
53	26
54	7
55	1
56	21
57	3
58	7
59	29
60	2
61	30
62	8
63	6
64	127
65	5
66	1
67	33
68	2
69	4
70	3
71	35
72	28
73	36
74	9
75	4
76	21
77	3
78	1
79	39
80	26
81	40
82	10
83	41
84	14
85	7
86	11
87	5

[1, 3, 1, 7, 2, 1, 3, 15, 4, 1, 5, 3, 6, 2, 1, 31, 8, 2, 9, 6, 1, 3, 11, 5, 12, 3, 13, 1, 14, 4, 15, 63, 2, 4, 3, 1, 18, 5, 2, 3, 20, 5, 21, 12, 1, 6, 23, 11, 24, 6, 3, 15, 26, 7, 1, 21, 3, 7, 29, 2, 30, 8, 6, 127, 5, 1, 33, 2, 4, 3, 35, 28, 36, 9, 4, 21, 3, 1, 39, 26, 40, 10, 41, 14, 7, 11, 5]

cp's OEIS Frontend

A061782 a(n) = smallest positive number m such that m*n is a triangular number.

Table of values

List of values

n	a(n)
1	1
2	3
3	1
4	7
5	2
6	1
7	3
8	15
9	4
10	1
11	5
12	3
13	6
14	2
15	1
16	31
17	8
18	2
19	9
20	6
21	1
22	3
23	11
24	5
25	12
26	3
27	13
28	1
29	14
30	4
31	15
32	63
33	2
34	4
35	3
36	1
37	18
38	5
39	2
40	3
41	20
42	5
43	21
44	12
45	1
46	6
47	23
48	11
49	24
50	6
51	3
52	15
53	26
54	7
55	1
56	21
57	3
58	7
59	29
60	2
61	30
62	8
63	6
64	127
65	5
66	1
67	33
68	2
69	4
70	3
71	35
72	28
73	36
74	9
75	4
76	21
77	3
78	1
79	39
80	26
81	40
82	10
83	41
84	14
85	7
86	11
87	5

n	a(n)
1	1
2	3
3	1
4	7
5	2
6	1
7	3
8	15
9	4
10	1
11	5
12	3
13	6
14	2
15	1
16	31
17	8
18	2
19	9
20	6
21	1
22	3
23	11
24	5
25	12
26	3
27	13
28	1
29	14
30	4
31	15
32	63
33	2
34	4
35	3
36	1
37	18
38	5
39	2
40	3
41	20
42	5
43	21
44	12
45	1
46	6
47	23
48	11
49	24
50	6
51	3
52	15
53	26
54	7
55	1
56	21
57	3
58	7
59	29
60	2
61	30
62	8
63	6
64	127
65	5
66	1
67	33
68	2
69	4
70	3
71	35
72	28
73	36
74	9
75	4
76	21
77	3
78	1
79	39
80	26
81	40
82	10
83	41
84	14
85	7
86	11
87	5

n	a(n)
1	1
2	3
3	1
4	7
5	2
6	1
7	3
8	15
9	4
10	1
11	5
12	3
13	6
14	2
15	1
16	31
17	8
18	2
19	9
20	6
21	1
22	3
23	11
24	5
25	12
26	3
27	13
28	1
29	14
30	4
31	15
32	63
33	2
34	4
35	3
36	1
37	18
38	5
39	2
40	3
41	20
42	5
43	21
44	12
45	1
46	6
47	23
48	11
49	24
50	6
51	3
52	15
53	26
54	7
55	1
56	21
57	3
58	7
59	29
60	2
61	30
62	8
63	6
64	127
65	5
66	1
67	33
68	2
69	4
70	3
71	35
72	28
73	36
74	9
75	4
76	21
77	3
78	1
79	39
80	26
81	40
82	10
83	41
84	14
85	7
86	11
87	5