A320919 - cp's OEIS frontend

A320919 Positive integers k such that binomial(k, 3) is divisible by 6.

n	a(n)
1	1
2	2
3	9
4	10
5	18
6	20
7	28
8	29
9	36
10	37
11	38
12	45
13	46
14	54
15	56
16	64
17	65
18	72
19	73
20	74
21	81
22	82
23	90
24	92
25	100
26	101
27	108
28	109
29	110
30	117
31	118
32	126
33	128
34	136
35	137
36	144
37	145
38	146
39	153
40	154
41	162
42	164
43	172
44	173
45	180
46	181
47	182
48	189
49	190
50	198
51	200

[1, 2, 9, 10, 18, 20, 28, 29, 36, 37, 38, 45, 46, 54, 56, 64, 65, 72, 73, 74, 81, 82, 90, 92, 100, 101, 108, 109, 110, 117, 118, 126, 128, 136, 137, 144, 145, 146, 153, 154, 162, 164, 172, 173, 180, 181, 182, 189, 190, 198, 200]

cp's OEIS Frontend

A320919 Positive integers k such that binomial(k, 3) is divisible by 6.

Table of values

List of values

n	a(n)
1	1
2	2
3	9
4	10
5	18
6	20
7	28
8	29
9	36
10	37
11	38
12	45
13	46
14	54
15	56
16	64
17	65
18	72
19	73
20	74
21	81
22	82
23	90
24	92
25	100
26	101
27	108
28	109
29	110
30	117
31	118
32	126
33	128
34	136
35	137
36	144
37	145
38	146
39	153
40	154
41	162
42	164
43	172
44	173
45	180
46	181
47	182
48	189
49	190
50	198
51	200

n	a(n)
1	1
2	2
3	9
4	10
5	18
6	20
7	28
8	29
9	36
10	37
11	38
12	45
13	46
14	54
15	56
16	64
17	65
18	72
19	73
20	74
21	81
22	82
23	90
24	92
25	100
26	101
27	108
28	109
29	110
30	117
31	118
32	126
33	128
34	136
35	137
36	144
37	145
38	146
39	153
40	154
41	162
42	164
43	172
44	173
45	180
46	181
47	182
48	189
49	190
50	198
51	200

n	a(n)
1	1
2	2
3	9
4	10
5	18
6	20
7	28
8	29
9	36
10	37
11	38
12	45
13	46
14	54
15	56
16	64
17	65
18	72
19	73
20	74
21	81
22	82
23	90
24	92
25	100
26	101
27	108
28	109
29	110
30	117
31	118
32	126
33	128
34	136
35	137
36	144
37	145
38	146
39	153
40	154
41	162
42	164
43	172
44	173
45	180
46	181
47	182
48	189
49	190
50	198
51	200