A138796 - cp's OEIS frontend

A138796 Least possible k > 0 with T(k) - T(j) = n, j > 0, where T(i) > 0 are the triangular numbers A000217.

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

[2, 3, 4, 3, 6, 4, 8, 4, 10, 6, 5, 7, 5, 6, 16, 9, 6, 10, 6, 8, 7, 12, 9, 7, 8, 7, 28, 15, 8, 16, 32, 8, 10, 8, 13, 19, 11, 9, 10, 21, 9, 22, 9, 10, 13, 24, 17, 10, 12, 11, 10, 27, 10, 13, 11, 12, 16, 30, 11, 31, 17, 11, 64, 11, 18, 34, 12, 14, 13, 36, 12, 37, 20, 12, 13, 12, 21, 40, 18]

cp's OEIS Frontend

A138796 Least possible k > 0 with T(k) - T(j) = n, j > 0, where T(i) > 0 are the triangular numbers A000217.

Table of values

List of values

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

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

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