A268978 - cp's OEIS frontend

A268978 Triangle T(n,k) read by rows with 1 <= k <= n: number of entries in the first n rows of Pascal's triangle that are divisible by k.

n	a(n)
1	1
2	3
3	0
4	6
5	1
6	0
7	10
8	1
9	2
10	0
11	15
12	4
13	3
14	2
15	0
16	21
17	6
18	3
19	2
20	4
21	1
22	28
23	9
24	7
25	3
26	7
27	3
28	0
29	36
30	9
31	9
32	3
33	9
34	3
35	6
36	0
37	45
38	16
39	9
40	9
41	10
42	3
43	11
44	4
45	0
46	55
47	22
48	17
49	13
50	10
51	9
52	15
53	4
54	6
55	4
56	66
57	29
58	24
59	16
60	18
61	14
62	18
63	6
64	9
65	10
66	0
67	78
68	33
69	30
70	16
71	24
72	18
73	20
74	6
75	9
76	12

[1, 3, 0, 6, 1, 0, 10, 1, 2, 0, 15, 4, 3, 2, 0, 21, 6, 3, 2, 4, 1, 28, 9, 7, 3, 7, 3, 0, 36, 9, 9, 3, 9, 3, 6, 0, 45, 16, 9, 9, 10, 3, 11, 4, 0, 55, 22, 17, 13, 10, 9, 15, 4, 6, 4, 66, 29, 24, 16, 18, 14, 18, 6, 9, 10, 0, 78, 33, 30, 16, 24, 18, 20, 6, 9, 12]

cp's OEIS Frontend

A268978 Triangle T(n,k) read by rows with 1 <= k <= n: number of entries in the first n rows of Pascal's triangle that are divisible by k.

Table of values

List of values

n	a(n)
1	1
2	3
3	0
4	6
5	1
6	0
7	10
8	1
9	2
10	0
11	15
12	4
13	3
14	2
15	0
16	21
17	6
18	3
19	2
20	4
21	1
22	28
23	9
24	7
25	3
26	7
27	3
28	0
29	36
30	9
31	9
32	3
33	9
34	3
35	6
36	0
37	45
38	16
39	9
40	9
41	10
42	3
43	11
44	4
45	0
46	55
47	22
48	17
49	13
50	10
51	9
52	15
53	4
54	6
55	4
56	66
57	29
58	24
59	16
60	18
61	14
62	18
63	6
64	9
65	10
66	0
67	78
68	33
69	30
70	16
71	24
72	18
73	20
74	6
75	9
76	12

n	a(n)
1	1
2	3
3	0
4	6
5	1
6	0
7	10
8	1
9	2
10	0
11	15
12	4
13	3
14	2
15	0
16	21
17	6
18	3
19	2
20	4
21	1
22	28
23	9
24	7
25	3
26	7
27	3
28	0
29	36
30	9
31	9
32	3
33	9
34	3
35	6
36	0
37	45
38	16
39	9
40	9
41	10
42	3
43	11
44	4
45	0
46	55
47	22
48	17
49	13
50	10
51	9
52	15
53	4
54	6
55	4
56	66
57	29
58	24
59	16
60	18
61	14
62	18
63	6
64	9
65	10
66	0
67	78
68	33
69	30
70	16
71	24
72	18
73	20
74	6
75	9
76	12

n	a(n)
1	1
2	3
3	0
4	6
5	1
6	0
7	10
8	1
9	2
10	0
11	15
12	4
13	3
14	2
15	0
16	21
17	6
18	3
19	2
20	4
21	1
22	28
23	9
24	7
25	3
26	7
27	3
28	0
29	36
30	9
31	9
32	3
33	9
34	3
35	6
36	0
37	45
38	16
39	9
40	9
41	10
42	3
43	11
44	4
45	0
46	55
47	22
48	17
49	13
50	10
51	9
52	15
53	4
54	6
55	4
56	66
57	29
58	24
59	16
60	18
61	14
62	18
63	6
64	9
65	10
66	0
67	78
68	33
69	30
70	16
71	24
72	18
73	20
74	6
75	9
76	12