A117966 - cp's OEIS frontend

A117966 Balanced ternary enumeration (based on balanced ternary representation) of integers; write n in ternary and then replace 2's with (-1)'s.

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

[0, 1, -1, 3, 4, 2, -3, -2, -4, 9, 10, 8, 12, 13, 11, 6, 7, 5, -9, -8, -10, -6, -5, -7, -12, -11, -13, 27, 28, 26, 30, 31, 29, 24, 25, 23, 36, 37, 35, 39, 40, 38, 33, 34, 32, 18, 19, 17, 21, 22, 20, 15, 16, 14, -27, -26, -28, -24, -23, -25, -30, -29, -31, -18, -17, -19, -15, -14, -16, -21, -20, -22, -36]

cp's OEIS Frontend

A117966 Balanced ternary enumeration (based on balanced ternary representation) of integers; write n in ternary and then replace 2's with (-1)'s.

Table of values

List of values

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

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

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