A212256 - cp's OEIS frontend

A212256 Number of (w,x,y,z) with all terms in {1,...,n} and 4/w = 1/x + 1/y + 1/z + 1/n.

n	a(n)
0	0
1	1
2	1
3	4
4	13
5	1
6	22
7	1
8	13
9	10
10	22
11	1
12	61
13	1
14	18
15	102
16	13
17	1
18	82
19	1
20	156
21	79
22	1
23	1
24	184
25	1
26	1
27	10
28	183
29	1
30	297
31	1
32	13
33	105
34	1
35	181
36	298
37	1
38	1
39	16
40	285
41	1
42	378
43	1
44	64
45	405
46	1
47	1
48	358
49	1
50	37
51	13
52	96
53	1
54	163
55	130
56	402
57	31
58	1
59	1
60	944

[0, 1, 1, 4, 13, 1, 22, 1, 13, 10, 22, 1, 61, 1, 18, 102, 13, 1, 82, 1, 156, 79, 1, 1, 184, 1, 1, 10, 183, 1, 297, 1, 13, 105, 1, 181, 298, 1, 1, 16, 285, 1, 378, 1, 64, 405, 1, 1, 358, 1, 37, 13, 96, 1, 163, 130, 402, 31, 1, 1, 944]

cp's OEIS Frontend

A212256 Number of (w,x,y,z) with all terms in {1,...,n} and 4/w = 1/x + 1/y + 1/z + 1/n.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	4
4	13
5	1
6	22
7	1
8	13
9	10
10	22
11	1
12	61
13	1
14	18
15	102
16	13
17	1
18	82
19	1
20	156
21	79
22	1
23	1
24	184
25	1
26	1
27	10
28	183
29	1
30	297
31	1
32	13
33	105
34	1
35	181
36	298
37	1
38	1
39	16
40	285
41	1
42	378
43	1
44	64
45	405
46	1
47	1
48	358
49	1
50	37
51	13
52	96
53	1
54	163
55	130
56	402
57	31
58	1
59	1
60	944

n	a(n)
0	0
1	1
2	1
3	4
4	13
5	1
6	22
7	1
8	13
9	10
10	22
11	1
12	61
13	1
14	18
15	102
16	13
17	1
18	82
19	1
20	156
21	79
22	1
23	1
24	184
25	1
26	1
27	10
28	183
29	1
30	297
31	1
32	13
33	105
34	1
35	181
36	298
37	1
38	1
39	16
40	285
41	1
42	378
43	1
44	64
45	405
46	1
47	1
48	358
49	1
50	37
51	13
52	96
53	1
54	163
55	130
56	402
57	31
58	1
59	1
60	944

n	a(n)
0	0
1	1
2	1
3	4
4	13
5	1
6	22
7	1
8	13
9	10
10	22
11	1
12	61
13	1
14	18
15	102
16	13
17	1
18	82
19	1
20	156
21	79
22	1
23	1
24	184
25	1
26	1
27	10
28	183
29	1
30	297
31	1
32	13
33	105
34	1
35	181
36	298
37	1
38	1
39	16
40	285
41	1
42	378
43	1
44	64
45	405
46	1
47	1
48	358
49	1
50	37
51	13
52	96
53	1
54	163
55	130
56	402
57	31
58	1
59	1
60	944