A205137 - cp's OEIS frontend

A205137 Least k such that n divides a difference between distinct pentagonal numbers when the differences are ordered as in A205136.

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	8
7	3
8	15
9	37
10	6
11	2
12	19
13	10
14	25
15	8
16	15
17	5
18	37
19	21
20	24
21	4
22	28
23	9
24	19
25	11
26	75
27	352
28	30
29	14
30	8
31	55
32	231
33	34
34	7
35	20
36	37
37	78
38	150
39	13
40	24
41	27
42	53
43	105
44	95
45	70
46	12
47	35
48	19
49	72
50	11
51	76
52	98
53	44
54	380
55	41
56	30
57	26
58	18
59	54
60	103

[1, 1, 4, 1, 6, 8, 3, 15, 37, 6, 2, 19, 10, 25, 8, 15, 5, 37, 21, 24, 4, 28, 9, 19, 11, 75, 352, 30, 14, 8, 55, 231, 34, 7, 20, 37, 78, 150, 13, 24, 27, 53, 105, 95, 70, 12, 35, 19, 72, 11, 76, 98, 44, 380, 41, 30, 26, 18, 54, 103]

cp's OEIS Frontend

A205137 Least k such that n divides a difference between distinct pentagonal numbers when the differences are ordered as in A205136.

Table of values

List of values

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	8
7	3
8	15
9	37
10	6
11	2
12	19
13	10
14	25
15	8
16	15
17	5
18	37
19	21
20	24
21	4
22	28
23	9
24	19
25	11
26	75
27	352
28	30
29	14
30	8
31	55
32	231
33	34
34	7
35	20
36	37
37	78
38	150
39	13
40	24
41	27
42	53
43	105
44	95
45	70
46	12
47	35
48	19
49	72
50	11
51	76
52	98
53	44
54	380
55	41
56	30
57	26
58	18
59	54
60	103

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	8
7	3
8	15
9	37
10	6
11	2
12	19
13	10
14	25
15	8
16	15
17	5
18	37
19	21
20	24
21	4
22	28
23	9
24	19
25	11
26	75
27	352
28	30
29	14
30	8
31	55
32	231
33	34
34	7
35	20
36	37
37	78
38	150
39	13
40	24
41	27
42	53
43	105
44	95
45	70
46	12
47	35
48	19
49	72
50	11
51	76
52	98
53	44
54	380
55	41
56	30
57	26
58	18
59	54
60	103

n	a(n)
1	1
2	1
3	4
4	1
5	6
6	8
7	3
8	15
9	37
10	6
11	2
12	19
13	10
14	25
15	8
16	15
17	5
18	37
19	21
20	24
21	4
22	28
23	9
24	19
25	11
26	75
27	352
28	30
29	14
30	8
31	55
32	231
33	34
34	7
35	20
36	37
37	78
38	150
39	13
40	24
41	27
42	53
43	105
44	95
45	70
46	12
47	35
48	19
49	72
50	11
51	76
52	98
53	44
54	380
55	41
56	30
57	26
58	18
59	54
60	103