A267686 - cp's OEIS frontend

A267686 Positive integers n such that n^4 = a^3 + b^3 = x^2 + y^2 + z^2 where x, y, z, a and b are positive integers, is soluble.

n	a(n)
1	9
2	28
3	35
4	54
5	65
6	72
7	91
8	126
9	133
10	134
11	152
12	182
13	183
14	189
15	201
16	217
17	219
18	224
19	243
20	250
21	273
22	278
23	280
24	309
25	341
26	344
27	351
28	370
29	399
30	407
31	422
32	432
33	453
34	468
35	497
36	513
37	520
38	539
39	559
40	576
41	579
42	637
43	651
44	658
45	686
46	728
47	730
48	737
49	756
50	793
51	854
52	855

[9, 28, 35, 54, 65, 72, 91, 126, 133, 134, 152, 182, 183, 189, 201, 217, 219, 224, 243, 250, 273, 278, 280, 309, 341, 344, 351, 370, 399, 407, 422, 432, 453, 468, 497, 513, 520, 539, 559, 576, 579, 637, 651, 658, 686, 728, 730, 737, 756, 793, 854, 855]

cp's OEIS Frontend

A267686 Positive integers n such that n^4 = a^3 + b^3 = x^2 + y^2 + z^2 where x, y, z, a and b are positive integers, is soluble.

Table of values

List of values

n	a(n)
1	9
2	28
3	35
4	54
5	65
6	72
7	91
8	126
9	133
10	134
11	152
12	182
13	183
14	189
15	201
16	217
17	219
18	224
19	243
20	250
21	273
22	278
23	280
24	309
25	341
26	344
27	351
28	370
29	399
30	407
31	422
32	432
33	453
34	468
35	497
36	513
37	520
38	539
39	559
40	576
41	579
42	637
43	651
44	658
45	686
46	728
47	730
48	737
49	756
50	793
51	854
52	855

n	a(n)
1	9
2	28
3	35
4	54
5	65
6	72
7	91
8	126
9	133
10	134
11	152
12	182
13	183
14	189
15	201
16	217
17	219
18	224
19	243
20	250
21	273
22	278
23	280
24	309
25	341
26	344
27	351
28	370
29	399
30	407
31	422
32	432
33	453
34	468
35	497
36	513
37	520
38	539
39	559
40	576
41	579
42	637
43	651
44	658
45	686
46	728
47	730
48	737
49	756
50	793
51	854
52	855

n	a(n)
1	9
2	28
3	35
4	54
5	65
6	72
7	91
8	126
9	133
10	134
11	152
12	182
13	183
14	189
15	201
16	217
17	219
18	224
19	243
20	250
21	273
22	278
23	280
24	309
25	341
26	344
27	351
28	370
29	399
30	407
31	422
32	432
33	453
34	468
35	497
36	513
37	520
38	539
39	559
40	576
41	579
42	637
43	651
44	658
45	686
46	728
47	730
48	737
49	756
50	793
51	854
52	855