A300227 - cp's OEIS frontend

A300227 a(n) = number of steps in simple Euclidean algorithm for gcd(n,k) to reach the termination test n=k when starting with n = n and k = sigma(n)-1, with a(1) = 1.

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	6
7	0
8	4
9	3
10	6
11	0
12	5
13	0
14	7
15	9
16	8
17	0
18	10
19	0
20	21
21	12
22	8
23	0
24	10
25	5
26	8
27	6
28	28
29	0
30	9
31	0
32	16
33	9
34	9
35	14
36	3
37	0
38	10
39	9
40	11
41	0
42	11
43	0
44	13
45	11
46	11
47	0
48	8
49	7
50	10
51	10
52	12
53	0
54	16
55	10
56	9
57	10
58	12
59	0
60	11
61	0
62	13
63	11
64	32
65	10
66	7
67	0
68	13
69	13
70	27
71	0
72	10
73	0
74	14
75	8
76	13
77	11
78	19
79	0
80	9
81	15
82	15
83	0
84	15
85	13
86	16
87	11
88	33
89	0
90	13
91	12
92	12
93	11
94	17
95	27
96	14
97	0

[1, 0, 0, 2, 0, 6, 0, 4, 3, 6, 0, 5, 0, 7, 9, 8, 0, 10, 0, 21, 12, 8, 0, 10, 5, 8, 6, 28, 0, 9, 0, 16, 9, 9, 14, 3, 0, 10, 9, 11, 0, 11, 0, 13, 11, 11, 0, 8, 7, 10, 10, 12, 0, 16, 10, 9, 10, 12, 0, 11, 0, 13, 11, 32, 10, 7, 0, 13, 13, 27, 0, 10, 0, 14, 8, 13, 11, 19, 0, 9, 15, 15, 0, 15, 13, 16, 11, 33, 0, 13, 12, 12, 11, 17, 27, 14, 0]

cp's OEIS Frontend

A300227 a(n) = number of steps in simple Euclidean algorithm for gcd(n,k) to reach the termination test n=k when starting with n = n and k = sigma(n)-1, with a(1) = 1.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	6
7	0
8	4
9	3
10	6
11	0
12	5
13	0
14	7
15	9
16	8
17	0
18	10
19	0
20	21
21	12
22	8
23	0
24	10
25	5
26	8
27	6
28	28
29	0
30	9
31	0
32	16
33	9
34	9
35	14
36	3
37	0
38	10
39	9
40	11
41	0
42	11
43	0
44	13
45	11
46	11
47	0
48	8
49	7
50	10
51	10
52	12
53	0
54	16
55	10
56	9
57	10
58	12
59	0
60	11
61	0
62	13
63	11
64	32
65	10
66	7
67	0
68	13
69	13
70	27
71	0
72	10
73	0
74	14
75	8
76	13
77	11
78	19
79	0
80	9
81	15
82	15
83	0
84	15
85	13
86	16
87	11
88	33
89	0
90	13
91	12
92	12
93	11
94	17
95	27
96	14
97	0

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	6
7	0
8	4
9	3
10	6
11	0
12	5
13	0
14	7
15	9
16	8
17	0
18	10
19	0
20	21
21	12
22	8
23	0
24	10
25	5
26	8
27	6
28	28
29	0
30	9
31	0
32	16
33	9
34	9
35	14
36	3
37	0
38	10
39	9
40	11
41	0
42	11
43	0
44	13
45	11
46	11
47	0
48	8
49	7
50	10
51	10
52	12
53	0
54	16
55	10
56	9
57	10
58	12
59	0
60	11
61	0
62	13
63	11
64	32
65	10
66	7
67	0
68	13
69	13
70	27
71	0
72	10
73	0
74	14
75	8
76	13
77	11
78	19
79	0
80	9
81	15
82	15
83	0
84	15
85	13
86	16
87	11
88	33
89	0
90	13
91	12
92	12
93	11
94	17
95	27
96	14
97	0

n	a(n)
1	1
2	0
3	0
4	2
5	0
6	6
7	0
8	4
9	3
10	6
11	0
12	5
13	0
14	7
15	9
16	8
17	0
18	10
19	0
20	21
21	12
22	8
23	0
24	10
25	5
26	8
27	6
28	28
29	0
30	9
31	0
32	16
33	9
34	9
35	14
36	3
37	0
38	10
39	9
40	11
41	0
42	11
43	0
44	13
45	11
46	11
47	0
48	8
49	7
50	10
51	10
52	12
53	0
54	16
55	10
56	9
57	10
58	12
59	0
60	11
61	0
62	13
63	11
64	32
65	10
66	7
67	0
68	13
69	13
70	27
71	0
72	10
73	0
74	14
75	8
76	13
77	11
78	19
79	0
80	9
81	15
82	15
83	0
84	15
85	13
86	16
87	11
88	33
89	0
90	13
91	12
92	12
93	11
94	17
95	27
96	14
97	0