A000989 - cp's OEIS frontend

A000989 3-adic valuation of binomial(2n, n): largest k such that 3^k divides binomial(2n, n).

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

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

cp's OEIS Frontend

A000989 3-adic valuation of binomial(2n, n): largest k such that 3^k divides binomial(2n, n).

Table of values

List of values

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

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

cp's OEIS Frontend

A000989 3-adic valuation of binomial(2*n, n): largest k such that 3^k divides binomial(2*n, n).

Table of values

List of values

A000989 3-adic valuation of binomial(2n, n): largest k such that 3^k divides binomial(2n, n).

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