A215090 - cp's OEIS frontend

A215090 a(n) = Sum_{i=0..m} d(i)3^i, where Sum_{i=0..m} d(i)4^i is the base-4 representation of n.

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

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

cp's OEIS Frontend

A215090 a(n) = Sum_{i=0..m} d(i)3^i, where Sum_{i=0..m} d(i)4^i is the base-4 representation of n.

Table of values

List of values

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

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

cp's OEIS Frontend

A215090 a(n) = Sum_{i=0..m} d(i)*3^i, where Sum_{i=0..m} d(i)*4^i is the base-4 representation of n.

Table of values

List of values

A215090 a(n) = Sum_{i=0..m} d(i)3^i, where Sum_{i=0..m} d(i)4^i is the base-4 representation of n.

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