A082490 - cp's OEIS frontend

A082490 Exponent of highest power of 3 dividing sum(0<=k C(2n,n)).

n	a(n)
1	0
2	1
3	2
4	0
5	2
6	3
7	1
8	2
9	4
10	0
11	1
12	2
13	0
14	3
15	4
16	2
17	3
18	5
19	1
20	2
21	3
22	1
23	3
24	4
25	2
26	3
27	6
28	0
29	1
30	2
31	0
32	2
33	3
34	1
35	2
36	4
37	0
38	1
39	2
40	0
41	4
42	5
43	3
44	4
45	6
46	2
47	3
48	4
49	2
50	4
51	5
52	3
53	4
54	7
55	1
56	2
57	3
58	1
59	3
60	4
61	2
62	3
63	5
64	1
65	2
66	3
67	1
68	4
69	5
70	3
71	4
72	6
73	2
74	3
75	4
76	2
77	4
78	5
79	3
80	4
81	8
82	0
83	1
84	2
85	0
86	2
87	3
88	1
89	2
90	4
91	0
92	1
93	2
94	0
95	3
96	4

[0, 1, 2, 0, 2, 3, 1, 2, 4, 0, 1, 2, 0, 3, 4, 2, 3, 5, 1, 2, 3, 1, 3, 4, 2, 3, 6, 0, 1, 2, 0, 2, 3, 1, 2, 4, 0, 1, 2, 0, 4, 5, 3, 4, 6, 2, 3, 4, 2, 4, 5, 3, 4, 7, 1, 2, 3, 1, 3, 4, 2, 3, 5, 1, 2, 3, 1, 4, 5, 3, 4, 6, 2, 3, 4, 2, 4, 5, 3, 4, 8, 0, 1, 2, 0, 2, 3, 1, 2, 4, 0, 1, 2, 0, 3, 4]

cp's OEIS Frontend

A082490 Exponent of highest power of 3 dividing sum(0<=k C(2n,n)).

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	0
5	2
6	3
7	1
8	2
9	4
10	0
11	1
12	2
13	0
14	3
15	4
16	2
17	3
18	5
19	1
20	2
21	3
22	1
23	3
24	4
25	2
26	3
27	6
28	0
29	1
30	2
31	0
32	2
33	3
34	1
35	2
36	4
37	0
38	1
39	2
40	0
41	4
42	5
43	3
44	4
45	6
46	2
47	3
48	4
49	2
50	4
51	5
52	3
53	4
54	7
55	1
56	2
57	3
58	1
59	3
60	4
61	2
62	3
63	5
64	1
65	2
66	3
67	1
68	4
69	5
70	3
71	4
72	6
73	2
74	3
75	4
76	2
77	4
78	5
79	3
80	4
81	8
82	0
83	1
84	2
85	0
86	2
87	3
88	1
89	2
90	4
91	0
92	1
93	2
94	0
95	3
96	4

n	a(n)
1	0
2	1
3	2
4	0
5	2
6	3
7	1
8	2
9	4
10	0
11	1
12	2
13	0
14	3
15	4
16	2
17	3
18	5
19	1
20	2
21	3
22	1
23	3
24	4
25	2
26	3
27	6
28	0
29	1
30	2
31	0
32	2
33	3
34	1
35	2
36	4
37	0
38	1
39	2
40	0
41	4
42	5
43	3
44	4
45	6
46	2
47	3
48	4
49	2
50	4
51	5
52	3
53	4
54	7
55	1
56	2
57	3
58	1
59	3
60	4
61	2
62	3
63	5
64	1
65	2
66	3
67	1
68	4
69	5
70	3
71	4
72	6
73	2
74	3
75	4
76	2
77	4
78	5
79	3
80	4
81	8
82	0
83	1
84	2
85	0
86	2
87	3
88	1
89	2
90	4
91	0
92	1
93	2
94	0
95	3
96	4

n	a(n)
1	0
2	1
3	2
4	0
5	2
6	3
7	1
8	2
9	4
10	0
11	1
12	2
13	0
14	3
15	4
16	2
17	3
18	5
19	1
20	2
21	3
22	1
23	3
24	4
25	2
26	3
27	6
28	0
29	1
30	2
31	0
32	2
33	3
34	1
35	2
36	4
37	0
38	1
39	2
40	0
41	4
42	5
43	3
44	4
45	6
46	2
47	3
48	4
49	2
50	4
51	5
52	3
53	4
54	7
55	1
56	2
57	3
58	1
59	3
60	4
61	2
62	3
63	5
64	1
65	2
66	3
67	1
68	4
69	5
70	3
71	4
72	6
73	2
74	3
75	4
76	2
77	4
78	5
79	3
80	4
81	8
82	0
83	1
84	2
85	0
86	2
87	3
88	1
89	2
90	4
91	0
92	1
93	2
94	0
95	3
96	4