A050135 - cp's OEIS frontend

A050135 a(1) = 1, a(n) = floor(a(n-1)/2) if this is not among 0,a(1),...,a(n-1); otherwise a(n) = 4*n.

n	a(n)
1	1
2	8
3	4
4	2
5	20
6	10
7	5
8	32
9	16
10	40
11	44
12	22
13	11
14	56
15	28
16	14
17	7
18	3
19	76
20	38
21	19
22	9
23	92
24	46
25	23
26	104
27	52
28	26
29	13
30	6
31	124
32	62
33	31
34	15
35	140
36	70
37	35
38	17
39	156
40	78
41	39
42	168
43	84
44	42
45	21
46	184
47	188
48	94
49	47
50	200
51	100
52	50
53	25
54	12
55	220
56	110
57	55
58	27
59	236

[1, 8, 4, 2, 20, 10, 5, 32, 16, 40, 44, 22, 11, 56, 28, 14, 7, 3, 76, 38, 19, 9, 92, 46, 23, 104, 52, 26, 13, 6, 124, 62, 31, 15, 140, 70, 35, 17, 156, 78, 39, 168, 84, 42, 21, 184, 188, 94, 47, 200, 100, 50, 25, 12, 220, 110, 55, 27, 236]

cp's OEIS Frontend

A050135 a(1) = 1, a(n) = floor(a(n-1)/2) if this is not among 0,a(1),...,a(n-1); otherwise a(n) = 4*n.

Table of values

List of values

n	a(n)
1	1
2	8
3	4
4	2
5	20
6	10
7	5
8	32
9	16
10	40
11	44
12	22
13	11
14	56
15	28
16	14
17	7
18	3
19	76
20	38
21	19
22	9
23	92
24	46
25	23
26	104
27	52
28	26
29	13
30	6
31	124
32	62
33	31
34	15
35	140
36	70
37	35
38	17
39	156
40	78
41	39
42	168
43	84
44	42
45	21
46	184
47	188
48	94
49	47
50	200
51	100
52	50
53	25
54	12
55	220
56	110
57	55
58	27
59	236

n	a(n)
1	1
2	8
3	4
4	2
5	20
6	10
7	5
8	32
9	16
10	40
11	44
12	22
13	11
14	56
15	28
16	14
17	7
18	3
19	76
20	38
21	19
22	9
23	92
24	46
25	23
26	104
27	52
28	26
29	13
30	6
31	124
32	62
33	31
34	15
35	140
36	70
37	35
38	17
39	156
40	78
41	39
42	168
43	84
44	42
45	21
46	184
47	188
48	94
49	47
50	200
51	100
52	50
53	25
54	12
55	220
56	110
57	55
58	27
59	236

n	a(n)
1	1
2	8
3	4
4	2
5	20
6	10
7	5
8	32
9	16
10	40
11	44
12	22
13	11
14	56
15	28
16	14
17	7
18	3
19	76
20	38
21	19
22	9
23	92
24	46
25	23
26	104
27	52
28	26
29	13
30	6
31	124
32	62
33	31
34	15
35	140
36	70
37	35
38	17
39	156
40	78
41	39
42	168
43	84
44	42
45	21
46	184
47	188
48	94
49	47
50	200
51	100
52	50
53	25
54	12
55	220
56	110
57	55
58	27
59	236