A050170 - cp's OEIS frontend

A050170 a(1) = 1, a(n) = floor(a(n-1)/sqrt(5)) if this is not among 0,a(1),...,a(n-1); otherwise a(n) = floor(a(n-1)*sqrt(5)).

n	a(n)
1	1
2	2
3	4
4	8
5	3
6	6
7	13
8	5
9	11
10	24
11	10
12	22
13	9
14	20
15	44
16	19
17	42
18	18
19	40
20	17
21	7
22	15
23	33
24	14
25	31
26	69
27	30
28	67
29	29
30	12
31	26
32	58
33	25
34	55
35	122
36	54
37	120
38	53
39	23
40	51
41	114
42	50
43	111
44	49
45	21
46	46
47	102
48	45
49	100
50	223
51	99
52	221
53	98
54	43
55	96
56	214
57	95
58	212
59	94
60	210

[1, 2, 4, 8, 3, 6, 13, 5, 11, 24, 10, 22, 9, 20, 44, 19, 42, 18, 40, 17, 7, 15, 33, 14, 31, 69, 30, 67, 29, 12, 26, 58, 25, 55, 122, 54, 120, 53, 23, 51, 114, 50, 111, 49, 21, 46, 102, 45, 100, 223, 99, 221, 98, 43, 96, 214, 95, 212, 94, 210]

cp's OEIS Frontend

A050170 a(1) = 1, a(n) = floor(a(n-1)/sqrt(5)) if this is not among 0,a(1),...,a(n-1); otherwise a(n) = floor(a(n-1)*sqrt(5)).

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	8
5	3
6	6
7	13
8	5
9	11
10	24
11	10
12	22
13	9
14	20
15	44
16	19
17	42
18	18
19	40
20	17
21	7
22	15
23	33
24	14
25	31
26	69
27	30
28	67
29	29
30	12
31	26
32	58
33	25
34	55
35	122
36	54
37	120
38	53
39	23
40	51
41	114
42	50
43	111
44	49
45	21
46	46
47	102
48	45
49	100
50	223
51	99
52	221
53	98
54	43
55	96
56	214
57	95
58	212
59	94
60	210

n	a(n)
1	1
2	2
3	4
4	8
5	3
6	6
7	13
8	5
9	11
10	24
11	10
12	22
13	9
14	20
15	44
16	19
17	42
18	18
19	40
20	17
21	7
22	15
23	33
24	14
25	31
26	69
27	30
28	67
29	29
30	12
31	26
32	58
33	25
34	55
35	122
36	54
37	120
38	53
39	23
40	51
41	114
42	50
43	111
44	49
45	21
46	46
47	102
48	45
49	100
50	223
51	99
52	221
53	98
54	43
55	96
56	214
57	95
58	212
59	94
60	210

n	a(n)
1	1
2	2
3	4
4	8
5	3
6	6
7	13
8	5
9	11
10	24
11	10
12	22
13	9
14	20
15	44
16	19
17	42
18	18
19	40
20	17
21	7
22	15
23	33
24	14
25	31
26	69
27	30
28	67
29	29
30	12
31	26
32	58
33	25
34	55
35	122
36	54
37	120
38	53
39	23
40	51
41	114
42	50
43	111
44	49
45	21
46	46
47	102
48	45
49	100
50	223
51	99
52	221
53	98
54	43
55	96
56	214
57	95
58	212
59	94
60	210