A198069 - cp's OEIS frontend

A198069 Table read by rows, T(0,0) = 1 and for n>0, 0<=k<=2^(n-1) T(n,k) = gcd(k,2^(n-1)).

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

[1, 1, 1, 2, 1, 2, 4, 1, 2, 1, 4, 8, 1, 2, 1, 4, 1, 2, 1, 8, 16, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1, 16, 32, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1, 16, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1, 32, 64, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2]

cp's OEIS Frontend

A198069 Table read by rows, T(0,0) = 1 and for n>0, 0<=k<=2^(n-1) T(n,k) = gcd(k,2^(n-1)).

Table of values

List of values

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

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

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