A281552 - cp's OEIS frontend

A281552 Write n in the Elias gamma code and sum the positions where there is a '1' followed immediately to the right by a '0', counting the leftmost digit as position 1.

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

[0, 1, 1, 2, 2, 6, 2, 3, 3, 9, 3, 8, 8, 9, 3, 4, 4, 12, 4, 11, 11, 12, 4, 10, 10, 18, 10, 11, 11, 12, 4, 5, 5, 15, 5, 14, 14, 15, 5, 13, 13, 23, 13, 14, 14, 15, 5, 12, 12, 22, 12, 21, 21, 22, 12, 13, 13, 23, 13, 14, 14, 15, 5, 6, 6, 18, 6, 17, 17, 18, 6, 16, 16, 28, 16, 17, 17, 18, 6]

cp's OEIS Frontend

A281552 Write n in the Elias gamma code and sum the positions where there is a '1' followed immediately to the right by a '0', counting the leftmost digit as position 1.

Table of values

List of values

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

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

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