A130335 - cp's OEIS frontend

A130335 Smallest k > 0 such that gcd(n(n+1)/2, (n+k)(n+k+1)/2) = 1.

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

[1, 2, 7, 2, 2, 4, 2, 2, 4, 2, 2, 10, 2, 2, 7, 2, 2, 4, 2, 2, 4, 2, 2, 13, 2, 2, 10, 2, 2, 7, 2, 2, 4, 2, 2, 10, 2, 2, 7, 2, 2, 4, 2, 2, 7, 2, 2, 10, 2, 2, 7, 2, 2, 4, 2, 2, 4, 2, 2, 13, 2, 2, 10, 2, 2, 4, 2, 2, 4, 2, 2, 10, 2, 2, 7, 2, 2, 4, 2, 2, 4, 2, 2, 22, 2, 2, 7, 2, 2, 16, 2, 2, 4, 2, 2, 10, 2, 2, 7, 2]

cp's OEIS Frontend

A130335 Smallest k > 0 such that gcd(n(n+1)/2, (n+k)(n+k+1)/2) = 1.

Table of values

List of values

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

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

cp's OEIS Frontend

A130335 Smallest k > 0 such that gcd(n*(n+1)/2, (n+k)*(n+k+1)/2) = 1.

Table of values

List of values

A130335 Smallest k > 0 such that gcd(n(n+1)/2, (n+k)(n+k+1)/2) = 1.

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