A140819 - cp's OEIS frontend

A140819 Triangle read by rows: T(n, m) = m if 2m = n, otherwise 2gcd(n, m).

n	a(n)
0	0
1	2
2	2
3	4
4	1
5	4
6	6
7	2
8	2
9	6
10	8
11	2
12	2
13	2
14	8
15	10
16	2
17	2
18	2
19	2
20	10
21	12
22	2
23	4
24	3
25	4
26	2
27	12
28	14
29	2
30	2
31	2
32	2
33	2
34	2
35	14
36	16
37	2
38	4
39	2
40	4
41	2
42	4
43	2
44	16
45	18
46	2
47	2
48	6
49	2
50	2
51	6
52	2
53	2
54	18

[0, 2, 2, 4, 1, 4, 6, 2, 2, 6, 8, 2, 2, 2, 8, 10, 2, 2, 2, 2, 10, 12, 2, 4, 3, 4, 2, 12, 14, 2, 2, 2, 2, 2, 2, 14, 16, 2, 4, 2, 4, 2, 4, 2, 16, 18, 2, 2, 6, 2, 2, 6, 2, 2, 18]

cp's OEIS Frontend

A140819 Triangle read by rows: T(n, m) = m if 2m = n, otherwise 2gcd(n, m).

Table of values

List of values

n	a(n)
0	0
1	2
2	2
3	4
4	1
5	4
6	6
7	2
8	2
9	6
10	8
11	2
12	2
13	2
14	8
15	10
16	2
17	2
18	2
19	2
20	10
21	12
22	2
23	4
24	3
25	4
26	2
27	12
28	14
29	2
30	2
31	2
32	2
33	2
34	2
35	14
36	16
37	2
38	4
39	2
40	4
41	2
42	4
43	2
44	16
45	18
46	2
47	2
48	6
49	2
50	2
51	6
52	2
53	2
54	18

n	a(n)
0	0
1	2
2	2
3	4
4	1
5	4
6	6
7	2
8	2
9	6
10	8
11	2
12	2
13	2
14	8
15	10
16	2
17	2
18	2
19	2
20	10
21	12
22	2
23	4
24	3
25	4
26	2
27	12
28	14
29	2
30	2
31	2
32	2
33	2
34	2
35	14
36	16
37	2
38	4
39	2
40	4
41	2
42	4
43	2
44	16
45	18
46	2
47	2
48	6
49	2
50	2
51	6
52	2
53	2
54	18

cp's OEIS Frontend

A140819 Triangle read by rows: T(n, m) = m if 2*m = n, otherwise 2*gcd(n, m).

Table of values

List of values

A140819 Triangle read by rows: T(n, m) = m if 2m = n, otherwise 2gcd(n, m).

n	a(n)
0	0
1	2
2	2
3	4
4	1
5	4
6	6
7	2
8	2
9	6
10	8
11	2
12	2
13	2
14	8
15	10
16	2
17	2
18	2
19	2
20	10
21	12
22	2
23	4
24	3
25	4
26	2
27	12
28	14
29	2
30	2
31	2
32	2
33	2
34	2
35	14
36	16
37	2
38	4
39	2
40	4
41	2
42	4
43	2
44	16
45	18
46	2
47	2
48	6
49	2
50	2
51	6
52	2
53	2
54	18