A060585 - cp's OEIS frontend

A060585 Write n in base 3, then (working from left to right) if the k-th digit of n is not equal to the digit to its left then the k-th digit of a(n) is 1, otherwise it is 0, and finally read the result as a base-2 number.

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

[0, 1, 1, 3, 2, 3, 3, 3, 2, 6, 7, 7, 5, 4, 5, 7, 7, 6, 6, 7, 7, 7, 6, 7, 5, 5, 4, 12, 13, 13, 15, 14, 15, 15, 15, 14, 10, 11, 11, 9, 8, 9, 11, 11, 10, 14, 15, 15, 15, 14, 15, 13, 13, 12, 12, 13, 13, 15, 14, 15, 15, 15, 14, 14, 15, 15, 13, 12, 13, 15, 15, 14, 10, 11, 11, 11, 10, 11, 9, 9]

cp's OEIS Frontend

A060585 Write n in base 3, then (working from left to right) if the k-th digit of n is not equal to the digit to its left then the k-th digit of a(n) is 1, otherwise it is 0, and finally read the result as a base-2 number.

Table of values

List of values

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

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

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