A257704 - cp's OEIS frontend

A257704 Number of steps from n to 0 using this algorithm: x -> floor(Pi*x) if x is odd, and x -> floor(x/Pi) if x is even.

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

[6, 1, 5, 7, 17, 7, 13, 2, 4, 6, 8, 6, 8, 8, 16, 18, 22, 18, 30, 8, 12, 14, 16, 14, 16, 3, 5, 3, 21, 5, 9, 7, 13, 7, 11, 9, 11, 7, 9, 7, 9, 9, 13, 9, 13, 9, 15, 17, 21, 17, 19, 19, 21, 23, 25, 23, 27, 19, 29, 31, 35, 31, 35, 9, 11, 13, 15, 13, 15, 15, 19, 15]

cp's OEIS Frontend

A257704 Number of steps from n to 0 using this algorithm: x -> floor(Pi*x) if x is odd, and x -> floor(x/Pi) if x is even.

Table of values

List of values

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

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

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