A118362 - cp's OEIS frontend

A118362 a(1)=1; for n>1, a(n) = "n AND a(n-1)" if that number is positive and not already in the sequence, otherwise a(n) = "n OR a(n-1)".

n	a(n)
1	1
2	3
3	3
4	7
5	5
6	4
7	7
8	15
9	9
10	8
11	11
12	15
13	13
14	12
15	15
16	31
17	17
18	16
19	19
20	23
21	21
22	20
23	23
24	31
25	25
26	24
27	27
28	31
29	29
30	28
31	31
32	63
33	33
34	32
35	35
36	39
37	37
38	36
39	39
40	47
41	41
42	40
43	43
44	47
45	45
46	44
47	47
48	63
49	49
50	48
51	51
52	55
53	53
54	52
55	55
56	63
57	57
58	56
59	59
60	63
61	61
62	60
63	63
64	127
65	65
66	64
67	67
68	71
69	69
70	68
71	71
72	79

[1, 3, 3, 7, 5, 4, 7, 15, 9, 8, 11, 15, 13, 12, 15, 31, 17, 16, 19, 23, 21, 20, 23, 31, 25, 24, 27, 31, 29, 28, 31, 63, 33, 32, 35, 39, 37, 36, 39, 47, 41, 40, 43, 47, 45, 44, 47, 63, 49, 48, 51, 55, 53, 52, 55, 63, 57, 56, 59, 63, 61, 60, 63, 127, 65, 64, 67, 71, 69, 68, 71, 79]

cp's OEIS Frontend

A118362 a(1)=1; for n>1, a(n) = "n AND a(n-1)" if that number is positive and not already in the sequence, otherwise a(n) = "n OR a(n-1)".

Table of values

List of values

n	a(n)
1	1
2	3
3	3
4	7
5	5
6	4
7	7
8	15
9	9
10	8
11	11
12	15
13	13
14	12
15	15
16	31
17	17
18	16
19	19
20	23
21	21
22	20
23	23
24	31
25	25
26	24
27	27
28	31
29	29
30	28
31	31
32	63
33	33
34	32
35	35
36	39
37	37
38	36
39	39
40	47
41	41
42	40
43	43
44	47
45	45
46	44
47	47
48	63
49	49
50	48
51	51
52	55
53	53
54	52
55	55
56	63
57	57
58	56
59	59
60	63
61	61
62	60
63	63
64	127
65	65
66	64
67	67
68	71
69	69
70	68
71	71
72	79

n	a(n)
1	1
2	3
3	3
4	7
5	5
6	4
7	7
8	15
9	9
10	8
11	11
12	15
13	13
14	12
15	15
16	31
17	17
18	16
19	19
20	23
21	21
22	20
23	23
24	31
25	25
26	24
27	27
28	31
29	29
30	28
31	31
32	63
33	33
34	32
35	35
36	39
37	37
38	36
39	39
40	47
41	41
42	40
43	43
44	47
45	45
46	44
47	47
48	63
49	49
50	48
51	51
52	55
53	53
54	52
55	55
56	63
57	57
58	56
59	59
60	63
61	61
62	60
63	63
64	127
65	65
66	64
67	67
68	71
69	69
70	68
71	71
72	79

n	a(n)
1	1
2	3
3	3
4	7
5	5
6	4
7	7
8	15
9	9
10	8
11	11
12	15
13	13
14	12
15	15
16	31
17	17
18	16
19	19
20	23
21	21
22	20
23	23
24	31
25	25
26	24
27	27
28	31
29	29
30	28
31	31
32	63
33	33
34	32
35	35
36	39
37	37
38	36
39	39
40	47
41	41
42	40
43	43
44	47
45	45
46	44
47	47
48	63
49	49
50	48
51	51
52	55
53	53
54	52
55	55
56	63
57	57
58	56
59	59
60	63
61	61
62	60
63	63
64	127
65	65
66	64
67	67
68	71
69	69
70	68
71	71
72	79