A379719 - cp's OEIS frontend

A379719 a(0) = 0, and for any n > 0, a(n) is the least integer (in absolute value) not yet in the sequence such that the absolute difference of a(n-1) and a(n) is a power of 2; in case of a tie, preference is given to the positive value.

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

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

cp's OEIS Frontend

A379719 a(0) = 0, and for any n > 0, a(n) is the least integer (in absolute value) not yet in the sequence such that the absolute difference of a(n-1) and a(n) is a power of 2; in case of a tie, preference is given to the positive value.

Table of values

List of values

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

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

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