A280844 - cp's OEIS frontend

A280844 Number of 2 X 2 matrices with entries in {-n,..,0,..,n} with no entries repeated having permanent = trace^n.

n	a(n)
0	0
1	0
2	0
3	4
4	16
5	20
6	16
7	36
8	56
9	60
10	72
11	76
12	80
13	100
14	112
15	100
16	136
17	124
18	152
19	172
20	192
21	196
22	224
23	196
24	232
25	236
26	264
27	252
28	288
29	276
30	288
31	308
32	344
33	332
34	344
35	332
36	384
37	388
38	416
39	404
40	456
41	428
42	456
43	444
44	496
45	468
46	512
47	468
48	536
49	556
50	648

[0, 0, 0, 4, 16, 20, 16, 36, 56, 60, 72, 76, 80, 100, 112, 100, 136, 124, 152, 172, 192, 196, 224, 196, 232, 236, 264, 252, 288, 276, 288, 308, 344, 332, 344, 332, 384, 388, 416, 404, 456, 428, 456, 444, 496, 468, 512, 468, 536, 556, 648]

cp's OEIS Frontend

A280844 Number of 2 X 2 matrices with entries in {-n,..,0,..,n} with no entries repeated having permanent = trace^n.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	4
4	16
5	20
6	16
7	36
8	56
9	60
10	72
11	76
12	80
13	100
14	112
15	100
16	136
17	124
18	152
19	172
20	192
21	196
22	224
23	196
24	232
25	236
26	264
27	252
28	288
29	276
30	288
31	308
32	344
33	332
34	344
35	332
36	384
37	388
38	416
39	404
40	456
41	428
42	456
43	444
44	496
45	468
46	512
47	468
48	536
49	556
50	648

n	a(n)
0	0
1	0
2	0
3	4
4	16
5	20
6	16
7	36
8	56
9	60
10	72
11	76
12	80
13	100
14	112
15	100
16	136
17	124
18	152
19	172
20	192
21	196
22	224
23	196
24	232
25	236
26	264
27	252
28	288
29	276
30	288
31	308
32	344
33	332
34	344
35	332
36	384
37	388
38	416
39	404
40	456
41	428
42	456
43	444
44	496
45	468
46	512
47	468
48	536
49	556
50	648

n	a(n)
0	0
1	0
2	0
3	4
4	16
5	20
6	16
7	36
8	56
9	60
10	72
11	76
12	80
13	100
14	112
15	100
16	136
17	124
18	152
19	172
20	192
21	196
22	224
23	196
24	232
25	236
26	264
27	252
28	288
29	276
30	288
31	308
32	344
33	332
34	344
35	332
36	384
37	388
38	416
39	404
40	456
41	428
42	456
43	444
44	496
45	468
46	512
47	468
48	536
49	556
50	648