A080776 - cp's OEIS frontend

A080776 Oscillating sequence which rises to 2^(k-1) in k-th segment (k>=1) then falls back to 0.

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	2
6	1
7	0
8	1
9	2
10	3
11	4
12	3
13	2
14	1
15	0
16	1
17	2
18	3
19	4
20	5
21	6
22	7
23	8
24	7
25	6
26	5
27	4
28	3
29	2
30	1
31	0
32	1
33	2
34	3
35	4
36	5
37	6
38	7
39	8
40	9
41	10
42	11
43	12
44	13
45	14
46	15
47	16
48	15
49	14
50	13
51	12
52	11
53	10
54	9
55	8
56	7
57	6
58	5
59	4
60	3
61	2
62	1
63	0
64	1
65	2
66	3
67	4
68	5
69	6
70	7
71	8
72	9
73	10
74	11
75	12
76	13
77	14
78	15
79	16
80	17
81	18
82	19
83	20
84	21
85	22
86	23
87	24
88	25
89	26
90	27
91	28
92	29
93	30
94	31
95	32
96	31
97	30

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

cp's OEIS Frontend

A080776 Oscillating sequence which rises to 2^(k-1) in k-th segment (k>=1) then falls back to 0.

Table of values

List of values

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	2
6	1
7	0
8	1
9	2
10	3
11	4
12	3
13	2
14	1
15	0
16	1
17	2
18	3
19	4
20	5
21	6
22	7
23	8
24	7
25	6
26	5
27	4
28	3
29	2
30	1
31	0
32	1
33	2
34	3
35	4
36	5
37	6
38	7
39	8
40	9
41	10
42	11
43	12
44	13
45	14
46	15
47	16
48	15
49	14
50	13
51	12
52	11
53	10
54	9
55	8
56	7
57	6
58	5
59	4
60	3
61	2
62	1
63	0
64	1
65	2
66	3
67	4
68	5
69	6
70	7
71	8
72	9
73	10
74	11
75	12
76	13
77	14
78	15
79	16
80	17
81	18
82	19
83	20
84	21
85	22
86	23
87	24
88	25
89	26
90	27
91	28
92	29
93	30
94	31
95	32
96	31
97	30

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	2
6	1
7	0
8	1
9	2
10	3
11	4
12	3
13	2
14	1
15	0
16	1
17	2
18	3
19	4
20	5
21	6
22	7
23	8
24	7
25	6
26	5
27	4
28	3
29	2
30	1
31	0
32	1
33	2
34	3
35	4
36	5
37	6
38	7
39	8
40	9
41	10
42	11
43	12
44	13
45	14
46	15
47	16
48	15
49	14
50	13
51	12
52	11
53	10
54	9
55	8
56	7
57	6
58	5
59	4
60	3
61	2
62	1
63	0
64	1
65	2
66	3
67	4
68	5
69	6
70	7
71	8
72	9
73	10
74	11
75	12
76	13
77	14
78	15
79	16
80	17
81	18
82	19
83	20
84	21
85	22
86	23
87	24
88	25
89	26
90	27
91	28
92	29
93	30
94	31
95	32
96	31
97	30

n	a(n)
0	0
1	0
2	1
3	0
4	1
5	2
6	1
7	0
8	1
9	2
10	3
11	4
12	3
13	2
14	1
15	0
16	1
17	2
18	3
19	4
20	5
21	6
22	7
23	8
24	7
25	6
26	5
27	4
28	3
29	2
30	1
31	0
32	1
33	2
34	3
35	4
36	5
37	6
38	7
39	8
40	9
41	10
42	11
43	12
44	13
45	14
46	15
47	16
48	15
49	14
50	13
51	12
52	11
53	10
54	9
55	8
56	7
57	6
58	5
59	4
60	3
61	2
62	1
63	0
64	1
65	2
66	3
67	4
68	5
69	6
70	7
71	8
72	9
73	10
74	11
75	12
76	13
77	14
78	15
79	16
80	17
81	18
82	19
83	20
84	21
85	22
86	23
87	24
88	25
89	26
90	27
91	28
92	29
93	30
94	31
95	32
96	31
97	30