A205005 - cp's OEIS frontend

A205005 The triangular number T(j) such that n divides T(k)-T(j)>0, where k is the least positive integer for which such a j exists.

n	a(n)
1	1
2	1
3	3
4	6
5	1
6	3
7	3
8	28
9	1
10	1
11	10
12	3
13	15
14	1
15	6
16	120
17	28
18	3
19	36
20	1
21	15
22	6
23	55
24	21
25	3
26	10
27	1
28	10
29	91
30	6
31	105
32	496
33	3
34	21
35	1
36	6
37	153
38	28
39	6
40	15
41	190
42	3
43	210
44	1
45	10
46	45
47	253
48	105
49	6
50	28
51	15
52	3
53	325
54	1
55	36
56	10
57	21
58	78
59	406
60	6

[1, 1, 3, 6, 1, 3, 3, 28, 1, 1, 10, 3, 15, 1, 6, 120, 28, 3, 36, 1, 15, 6, 55, 21, 3, 10, 1, 10, 91, 6, 105, 496, 3, 21, 1, 6, 153, 28, 6, 15, 190, 3, 210, 1, 10, 45, 253, 105, 6, 28, 15, 3, 325, 1, 36, 10, 21, 78, 406, 6]

cp's OEIS Frontend

A205005 The triangular number T(j) such that n divides T(k)-T(j)>0, where k is the least positive integer for which such a j exists.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	6
5	1
6	3
7	3
8	28
9	1
10	1
11	10
12	3
13	15
14	1
15	6
16	120
17	28
18	3
19	36
20	1
21	15
22	6
23	55
24	21
25	3
26	10
27	1
28	10
29	91
30	6
31	105
32	496
33	3
34	21
35	1
36	6
37	153
38	28
39	6
40	15
41	190
42	3
43	210
44	1
45	10
46	45
47	253
48	105
49	6
50	28
51	15
52	3
53	325
54	1
55	36
56	10
57	21
58	78
59	406
60	6

n	a(n)
1	1
2	1
3	3
4	6
5	1
6	3
7	3
8	28
9	1
10	1
11	10
12	3
13	15
14	1
15	6
16	120
17	28
18	3
19	36
20	1
21	15
22	6
23	55
24	21
25	3
26	10
27	1
28	10
29	91
30	6
31	105
32	496
33	3
34	21
35	1
36	6
37	153
38	28
39	6
40	15
41	190
42	3
43	210
44	1
45	10
46	45
47	253
48	105
49	6
50	28
51	15
52	3
53	325
54	1
55	36
56	10
57	21
58	78
59	406
60	6

n	a(n)
1	1
2	1
3	3
4	6
5	1
6	3
7	3
8	28
9	1
10	1
11	10
12	3
13	15
14	1
15	6
16	120
17	28
18	3
19	36
20	1
21	15
22	6
23	55
24	21
25	3
26	10
27	1
28	10
29	91
30	6
31	105
32	496
33	3
34	21
35	1
36	6
37	153
38	28
39	6
40	15
41	190
42	3
43	210
44	1
45	10
46	45
47	253
48	105
49	6
50	28
51	15
52	3
53	325
54	1
55	36
56	10
57	21
58	78
59	406
60	6