A212102 - cp's OEIS frontend

A212102 Number of (w,x,y,z) with all terms in {1,...,n} and 1/w=1/x+1/y+1/z.

n	a(n)
0	0
1	0
2	0
3	1
4	4
5	4
6	11
7	11
8	14
9	15
10	18
11	18
12	34
13	34
14	34
15	56
16	59
17	59
18	78
19	78
20	105
21	112
22	112
23	112
24	143
25	143
26	143
27	144
28	177
29	177
30	235
31	235
32	238
33	245
34	245
35	269
36	318
37	318
38	318
39	319
40	367
41	367
42	416
43	416
44	422
45	471
46	471
47	471
48	517
49	517
50	520
51	521
52	530
53	530
54	549
55	561

[0, 0, 0, 1, 4, 4, 11, 11, 14, 15, 18, 18, 34, 34, 34, 56, 59, 59, 78, 78, 105, 112, 112, 112, 143, 143, 143, 144, 177, 177, 235, 235, 238, 245, 245, 269, 318, 318, 318, 319, 367, 367, 416, 416, 422, 471, 471, 471, 517, 517, 520, 521, 530, 530, 549, 561]

cp's OEIS Frontend

A212102 Number of (w,x,y,z) with all terms in {1,...,n} and 1/w=1/x+1/y+1/z.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	1
4	4
5	4
6	11
7	11
8	14
9	15
10	18
11	18
12	34
13	34
14	34
15	56
16	59
17	59
18	78
19	78
20	105
21	112
22	112
23	112
24	143
25	143
26	143
27	144
28	177
29	177
30	235
31	235
32	238
33	245
34	245
35	269
36	318
37	318
38	318
39	319
40	367
41	367
42	416
43	416
44	422
45	471
46	471
47	471
48	517
49	517
50	520
51	521
52	530
53	530
54	549
55	561

n	a(n)
0	0
1	0
2	0
3	1
4	4
5	4
6	11
7	11
8	14
9	15
10	18
11	18
12	34
13	34
14	34
15	56
16	59
17	59
18	78
19	78
20	105
21	112
22	112
23	112
24	143
25	143
26	143
27	144
28	177
29	177
30	235
31	235
32	238
33	245
34	245
35	269
36	318
37	318
38	318
39	319
40	367
41	367
42	416
43	416
44	422
45	471
46	471
47	471
48	517
49	517
50	520
51	521
52	530
53	530
54	549
55	561

n	a(n)
0	0
1	0
2	0
3	1
4	4
5	4
6	11
7	11
8	14
9	15
10	18
11	18
12	34
13	34
14	34
15	56
16	59
17	59
18	78
19	78
20	105
21	112
22	112
23	112
24	143
25	143
26	143
27	144
28	177
29	177
30	235
31	235
32	238
33	245
34	245
35	269
36	318
37	318
38	318
39	319
40	367
41	367
42	416
43	416
44	422
45	471
46	471
47	471
48	517
49	517
50	520
51	521
52	530
53	530
54	549
55	561