A146974 - cp's OEIS frontend

A146974 Numbers k such that there is no nonzero integer solution for the Diophantine equation x_1^2 + x_2^2 + ... + x_k^2 = x_1x_2...*x_k.

n	a(n)
1	2
2	6
3	9
4	11
5	12
6	15
7	16
8	18
9	20
10	21
11	24
12	29
13	32
14	33
15	36
16	41
17	42
18	45
19	48
20	50
21	51
22	56
23	57
24	60
25	66
26	72
27	76
28	77
29	81
30	82
31	84
32	90
33	96
34	99
35	101
36	102
37	105
38	106
39	108
40	113
41	114
42	120
43	122
44	123
45	126
46	132
47	136
48	137
49	140
50	141
51	144
52	146
53	156
54	162
55	164
56	168
57	171
58	176
59	177
60	180

[2, 6, 9, 11, 12, 15, 16, 18, 20, 21, 24, 29, 32, 33, 36, 41, 42, 45, 48, 50, 51, 56, 57, 60, 66, 72, 76, 77, 81, 82, 84, 90, 96, 99, 101, 102, 105, 106, 108, 113, 114, 120, 122, 123, 126, 132, 136, 137, 140, 141, 144, 146, 156, 162, 164, 168, 171, 176, 177, 180]

cp's OEIS Frontend

A146974 Numbers k such that there is no nonzero integer solution for the Diophantine equation x_1^2 + x_2^2 + ... + x_k^2 = x_1x_2...*x_k.

Table of values

List of values

n	a(n)
1	2
2	6
3	9
4	11
5	12
6	15
7	16
8	18
9	20
10	21
11	24
12	29
13	32
14	33
15	36
16	41
17	42
18	45
19	48
20	50
21	51
22	56
23	57
24	60
25	66
26	72
27	76
28	77
29	81
30	82
31	84
32	90
33	96
34	99
35	101
36	102
37	105
38	106
39	108
40	113
41	114
42	120
43	122
44	123
45	126
46	132
47	136
48	137
49	140
50	141
51	144
52	146
53	156
54	162
55	164
56	168
57	171
58	176
59	177
60	180

n	a(n)
1	2
2	6
3	9
4	11
5	12
6	15
7	16
8	18
9	20
10	21
11	24
12	29
13	32
14	33
15	36
16	41
17	42
18	45
19	48
20	50
21	51
22	56
23	57
24	60
25	66
26	72
27	76
28	77
29	81
30	82
31	84
32	90
33	96
34	99
35	101
36	102
37	105
38	106
39	108
40	113
41	114
42	120
43	122
44	123
45	126
46	132
47	136
48	137
49	140
50	141
51	144
52	146
53	156
54	162
55	164
56	168
57	171
58	176
59	177
60	180

cp's OEIS Frontend

A146974 Numbers k such that there is no nonzero integer solution for the Diophantine equation x_1^2 + x_2^2 + ... + x_k^2 = x_1*x_2*...*x_k.

Table of values

List of values

A146974 Numbers k such that there is no nonzero integer solution for the Diophantine equation x_1^2 + x_2^2 + ... + x_k^2 = x_1x_2...*x_k.

n	a(n)
1	2
2	6
3	9
4	11
5	12
6	15
7	16
8	18
9	20
10	21
11	24
12	29
13	32
14	33
15	36
16	41
17	42
18	45
19	48
20	50
21	51
22	56
23	57
24	60
25	66
26	72
27	76
28	77
29	81
30	82
31	84
32	90
33	96
34	99
35	101
36	102
37	105
38	106
39	108
40	113
41	114
42	120
43	122
44	123
45	126
46	132
47	136
48	137
49	140
50	141
51	144
52	146
53	156
54	162
55	164
56	168
57	171
58	176
59	177
60	180