A157635 - cp's OEIS frontend

A157635 Triangle read by rows: T(n,m) = 1 if nm(n-m) = 0, and nm(n-m) otherwise.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	6
8	6
9	1
10	1
11	12
12	16
13	12
14	1
15	1
16	20
17	30
18	30
19	20
20	1
21	1
22	30
23	48
24	54
25	48
26	30
27	1
28	1
29	42
30	70
31	84
32	84
33	70
34	42
35	1
36	1
37	56
38	96
39	120
40	128
41	120
42	96
43	56
44	1
45	1
46	72
47	126
48	162
49	180
50	180
51	162
52	126
53	72
54	1
55	1
56	90
57	160
58	210
59	240
60	250
61	240
62	210
63	160
64	90
65	1

[1, 1, 1, 1, 2, 1, 1, 6, 6, 1, 1, 12, 16, 12, 1, 1, 20, 30, 30, 20, 1, 1, 30, 48, 54, 48, 30, 1, 1, 42, 70, 84, 84, 70, 42, 1, 1, 56, 96, 120, 128, 120, 96, 56, 1, 1, 72, 126, 162, 180, 180, 162, 126, 72, 1, 1, 90, 160, 210, 240, 250, 240, 210, 160, 90, 1]

cp's OEIS Frontend

A157635 Triangle read by rows: T(n,m) = 1 if nm(n-m) = 0, and nm(n-m) otherwise.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	6
8	6
9	1
10	1
11	12
12	16
13	12
14	1
15	1
16	20
17	30
18	30
19	20
20	1
21	1
22	30
23	48
24	54
25	48
26	30
27	1
28	1
29	42
30	70
31	84
32	84
33	70
34	42
35	1
36	1
37	56
38	96
39	120
40	128
41	120
42	96
43	56
44	1
45	1
46	72
47	126
48	162
49	180
50	180
51	162
52	126
53	72
54	1
55	1
56	90
57	160
58	210
59	240
60	250
61	240
62	210
63	160
64	90
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	6
8	6
9	1
10	1
11	12
12	16
13	12
14	1
15	1
16	20
17	30
18	30
19	20
20	1
21	1
22	30
23	48
24	54
25	48
26	30
27	1
28	1
29	42
30	70
31	84
32	84
33	70
34	42
35	1
36	1
37	56
38	96
39	120
40	128
41	120
42	96
43	56
44	1
45	1
46	72
47	126
48	162
49	180
50	180
51	162
52	126
53	72
54	1
55	1
56	90
57	160
58	210
59	240
60	250
61	240
62	210
63	160
64	90
65	1

cp's OEIS Frontend

A157635 Triangle read by rows: T(n,m) = 1 if n*m*(n-m) = 0, and n*m*(n-m) otherwise.

Table of values

List of values

A157635 Triangle read by rows: T(n,m) = 1 if nm(n-m) = 0, and nm(n-m) otherwise.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	6
8	6
9	1
10	1
11	12
12	16
13	12
14	1
15	1
16	20
17	30
18	30
19	20
20	1
21	1
22	30
23	48
24	54
25	48
26	30
27	1
28	1
29	42
30	70
31	84
32	84
33	70
34	42
35	1
36	1
37	56
38	96
39	120
40	128
41	120
42	96
43	56
44	1
45	1
46	72
47	126
48	162
49	180
50	180
51	162
52	126
53	72
54	1
55	1
56	90
57	160
58	210
59	240
60	250
61	240
62	210
63	160
64	90
65	1