A249150 - cp's OEIS frontend

A249150 Number of trailing zeros in the factorial base representation of products of binomial coefficients: a(n) = A230403(A001142(n)).

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

[0, 0, 1, 0, 3, 1, 5, 0, 1, 3, 9, 6, 11, 5, 3, 0, 15, 1, 17, 3, 5, 9, 21, 10, 3, 11, 1, 5, 27, 24, 29, 0, 9, 15, 5, 35, 35, 17, 11, 39, 39, 5, 41, 9, 22, 21, 45, 18, 5, 3, 15, 11, 51, 1, 9, 34, 17, 27, 57, 46, 59, 29, 62, 0, 11, 9, 65, 15, 21, 48, 69, 40, 71, 35, 3, 17, 9, 11, 77, 79, 1]

cp's OEIS Frontend

A249150 Number of trailing zeros in the factorial base representation of products of binomial coefficients: a(n) = A230403(A001142(n)).

Table of values

List of values

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

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

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