A330827 - cp's OEIS frontend

A330827 a(n) is the numbers of ways to write 2*n = u + v where the ternary representations of u and of v have the same number of digits d for d = 0..2.

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

[1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 3, 1, 3, 1, 5, 3, 3, 5, 3, 5, 3, 3, 1, 3, 1, 1, 1, 1, 3, 1, 3, 3, 5, 3, 5, 3, 5, 5, 5, 7, 5, 7, 7, 5, 9, 7, 7, 11, 7, 9, 7, 7, 7, 11, 9, 13, 5, 9, 5, 15, 7, 9, 7, 7, 7, 7, 7, 5, 5, 5, 3, 5, 3, 5, 3, 3, 1, 3, 1, 1, 1, 1, 3, 1, 3]

cp's OEIS Frontend

A330827 a(n) is the numbers of ways to write 2*n = u + v where the ternary representations of u and of v have the same number of digits d for d = 0..2.

Table of values

List of values

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

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

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