A205142 - cp's OEIS frontend

A205142 s(k)-s(j), where (s(k),s(j)) is the least such pair for which n divides their difference, and s(j)=j(3j-1)/2, the j-th pentagonal number.

n	a(n)
1	4
2	4
3	21
4	4
5	10
6	30
7	7
8	16
9	144
10	10
11	11
12	48
13	13
14	70
15	30
16	16
17	17
18	144
19	19
20	80
21	21
22	22
23	23
24	48
25	50
26	130
27	1161
28	112
29	29
30	30
31	31
32	64
33	66
34	34
35	35
36	144
37	37
38	190
39	39
40	80
41	41
42	84
43	43
44	308
45	225
46	46
47	47
48	48
49	196
50	50
51	102
52	260
53	53
54	1242
55	110
56	112
57	57
58	58
59	59
60	120

[4, 4, 21, 4, 10, 30, 7, 16, 144, 10, 11, 48, 13, 70, 30, 16, 17, 144, 19, 80, 21, 22, 23, 48, 50, 130, 1161, 112, 29, 30, 31, 64, 66, 34, 35, 144, 37, 190, 39, 80, 41, 84, 43, 308, 225, 46, 47, 48, 196, 50, 102, 260, 53, 1242, 110, 112, 57, 58, 59, 120]

cp's OEIS Frontend

A205142 s(k)-s(j), where (s(k),s(j)) is the least such pair for which n divides their difference, and s(j)=j(3j-1)/2, the j-th pentagonal number.

Table of values

List of values