A370932 - cp's OEIS frontend

A370932 For any number n >= 0 with ternary expansion Sum_{i >= 0} t_i * 3^i, a(n) = Sum_{i >= 0} ((Sum_{j >= 0} (-1)^j * t_{i+j}) mod 3) * 3^i.

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

[0, 1, 2, 5, 3, 4, 7, 8, 6, 16, 17, 15, 9, 10, 11, 14, 12, 13, 23, 21, 22, 25, 26, 24, 18, 19, 20, 50, 48, 49, 52, 53, 51, 45, 46, 47, 27, 28, 29, 32, 30, 31, 34, 35, 33, 43, 44, 42, 36, 37, 38, 41, 39, 40, 70, 71, 69, 63, 64, 65, 68, 66, 67, 77, 75, 76, 79, 80]

cp's OEIS Frontend

A370932 For any number n >= 0 with ternary expansion Sum_{i >= 0} t_i * 3^i, a(n) = Sum_{i >= 0} ((Sum_{j >= 0} (-1)^j * t_{i+j}) mod 3) * 3^i.

Table of values

List of values

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

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

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