A165727 - cp's OEIS frontend

A165727 Table T(k,n) read by antidiagonals: denominator of 1/min(n,k)^2 -1/max(n,k)^2 with T(0,n) = T(k,0) = 0.

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	4
8	4
9	0
10	0
11	9
12	1
13	9
14	0
15	0
16	16
17	36
18	36
19	16
20	0
21	0
22	25
23	16
24	1
25	16
26	25
27	0
28	0
29	36
30	100
31	144
32	144
33	100
34	36
35	0
36	0
37	49
38	9
39	225
40	1
41	225
42	9
43	49
44	0
45	0
46	64
47	196
48	12
49	400
50	400
51	12
52	196
53	64
54	0
55	0
56	81
57	64
58	441
59	144
60	1
61	144
62	441
63	64
64	81
65	0
66	0
67	100
68	324
69	576
70	784
71	900
72	900
73	784
74	576
75	324
76	100
77	0

[0, 0, 0, 0, 1, 0, 0, 4, 4, 0, 0, 9, 1, 9, 0, 0, 16, 36, 36, 16, 0, 0, 25, 16, 1, 16, 25, 0, 0, 36, 100, 144, 144, 100, 36, 0, 0, 49, 9, 225, 1, 225, 9, 49, 0, 0, 64, 196, 12, 400, 400, 12, 196, 64, 0, 0, 81, 64, 441, 144, 1, 144, 441, 64, 81, 0, 0, 100, 324, 576, 784, 900, 900, 784, 576, 324, 100, 0]

cp's OEIS Frontend

A165727 Table T(k,n) read by antidiagonals: denominator of 1/min(n,k)^2 -1/max(n,k)^2 with T(0,n) = T(k,0) = 0.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	4
8	4
9	0
10	0
11	9
12	1
13	9
14	0
15	0
16	16
17	36
18	36
19	16
20	0
21	0
22	25
23	16
24	1
25	16
26	25
27	0
28	0
29	36
30	100
31	144
32	144
33	100
34	36
35	0
36	0
37	49
38	9
39	225
40	1
41	225
42	9
43	49
44	0
45	0
46	64
47	196
48	12
49	400
50	400
51	12
52	196
53	64
54	0
55	0
56	81
57	64
58	441
59	144
60	1
61	144
62	441
63	64
64	81
65	0
66	0
67	100
68	324
69	576
70	784
71	900
72	900
73	784
74	576
75	324
76	100
77	0

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	4
8	4
9	0
10	0
11	9
12	1
13	9
14	0
15	0
16	16
17	36
18	36
19	16
20	0
21	0
22	25
23	16
24	1
25	16
26	25
27	0
28	0
29	36
30	100
31	144
32	144
33	100
34	36
35	0
36	0
37	49
38	9
39	225
40	1
41	225
42	9
43	49
44	0
45	0
46	64
47	196
48	12
49	400
50	400
51	12
52	196
53	64
54	0
55	0
56	81
57	64
58	441
59	144
60	1
61	144
62	441
63	64
64	81
65	0
66	0
67	100
68	324
69	576
70	784
71	900
72	900
73	784
74	576
75	324
76	100
77	0

n	a(n)
0	0
1	0
2	0
3	0
4	1
5	0
6	0
7	4
8	4
9	0
10	0
11	9
12	1
13	9
14	0
15	0
16	16
17	36
18	36
19	16
20	0
21	0
22	25
23	16
24	1
25	16
26	25
27	0
28	0
29	36
30	100
31	144
32	144
33	100
34	36
35	0
36	0
37	49
38	9
39	225
40	1
41	225
42	9
43	49
44	0
45	0
46	64
47	196
48	12
49	400
50	400
51	12
52	196
53	64
54	0
55	0
56	81
57	64
58	441
59	144
60	1
61	144
62	441
63	64
64	81
65	0
66	0
67	100
68	324
69	576
70	784
71	900
72	900
73	784
74	576
75	324
76	100
77	0