A132896 - cp's OEIS frontend

A132896 Triangle read by rows: T(n,k)=number of prime divisors of C(n,k), counted with multiplicity (0<=k<=n).

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	2
12	2
13	2
14	0
15	0
16	1
17	2
18	2
19	1
20	0
21	0
22	2
23	2
24	3
25	2
26	2
27	0
28	0
29	1
30	2
31	2
32	2
33	2
34	1
35	0
36	0
37	3
38	3
39	4
40	3
41	4
42	3
43	3
44	0
45	0
46	2
47	4
48	4
49	4
50	4
51	4
52	4
53	2
54	0
55	0
56	2
57	3
58	5
59	4
60	5
61	4
62	5
63	3
64	2
65	0
66	0
67	1
68	2
69	3
70	4
71	4
72	4
73	4
74	3
75	2
76	1
77	0
78	0
79	3
80	3
81	4
82	4
83	6
84	5
85	6
86	4
87	4
88	3
89	3
90	0

[0, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0, 2, 2, 2, 0, 0, 1, 2, 2, 1, 0, 0, 2, 2, 3, 2, 2, 0, 0, 1, 2, 2, 2, 2, 1, 0, 0, 3, 3, 4, 3, 4, 3, 3, 0, 0, 2, 4, 4, 4, 4, 4, 4, 2, 0, 0, 2, 3, 5, 4, 5, 4, 5, 3, 2, 0, 0, 1, 2, 3, 4, 4, 4, 4, 3, 2, 1, 0, 0, 3, 3, 4, 4, 6, 5, 6, 4, 4, 3, 3, 0]

cp's OEIS Frontend

A132896 Triangle read by rows: T(n,k)=number of prime divisors of C(n,k), counted with multiplicity (0<=k<=n).

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	2
12	2
13	2
14	0
15	0
16	1
17	2
18	2
19	1
20	0
21	0
22	2
23	2
24	3
25	2
26	2
27	0
28	0
29	1
30	2
31	2
32	2
33	2
34	1
35	0
36	0
37	3
38	3
39	4
40	3
41	4
42	3
43	3
44	0
45	0
46	2
47	4
48	4
49	4
50	4
51	4
52	4
53	2
54	0
55	0
56	2
57	3
58	5
59	4
60	5
61	4
62	5
63	3
64	2
65	0
66	0
67	1
68	2
69	3
70	4
71	4
72	4
73	4
74	3
75	2
76	1
77	0
78	0
79	3
80	3
81	4
82	4
83	6
84	5
85	6
86	4
87	4
88	3
89	3
90	0

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	2
12	2
13	2
14	0
15	0
16	1
17	2
18	2
19	1
20	0
21	0
22	2
23	2
24	3
25	2
26	2
27	0
28	0
29	1
30	2
31	2
32	2
33	2
34	1
35	0
36	0
37	3
38	3
39	4
40	3
41	4
42	3
43	3
44	0
45	0
46	2
47	4
48	4
49	4
50	4
51	4
52	4
53	2
54	0
55	0
56	2
57	3
58	5
59	4
60	5
61	4
62	5
63	3
64	2
65	0
66	0
67	1
68	2
69	3
70	4
71	4
72	4
73	4
74	3
75	2
76	1
77	0
78	0
79	3
80	3
81	4
82	4
83	6
84	5
85	6
86	4
87	4
88	3
89	3
90	0

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	1
8	1
9	0
10	0
11	2
12	2
13	2
14	0
15	0
16	1
17	2
18	2
19	1
20	0
21	0
22	2
23	2
24	3
25	2
26	2
27	0
28	0
29	1
30	2
31	2
32	2
33	2
34	1
35	0
36	0
37	3
38	3
39	4
40	3
41	4
42	3
43	3
44	0
45	0
46	2
47	4
48	4
49	4
50	4
51	4
52	4
53	2
54	0
55	0
56	2
57	3
58	5
59	4
60	5
61	4
62	5
63	3
64	2
65	0
66	0
67	1
68	2
69	3
70	4
71	4
72	4
73	4
74	3
75	2
76	1
77	0
78	0
79	3
80	3
81	4
82	4
83	6
84	5
85	6
86	4
87	4
88	3
89	3
90	0