A276113 - cp's OEIS frontend

A276113 Number of 2 X 2 matrices with entries in {0,1,...,n} and permanent = (trace)^2 with no entry repeated.

n	a(n)
0	0
1	0
2	0
3	0
4	4
5	4
6	4
7	8
8	12
9	24
10	24
11	24
12	32
13	52
14	56
15	56
16	76
17	76
18	88
19	120
20	124
21	152
22	152
23	152
24	160
25	192
26	212
27	236
28	288
29	288
30	288
31	352
32	372
33	372
34	372
35	376
36	420
37	496
38	528
39	600
40	604
41	604
42	632
43	724
44	728
45	740
46	740
47	740
48	788
49	932
50	964

[0, 0, 0, 0, 4, 4, 4, 8, 12, 24, 24, 24, 32, 52, 56, 56, 76, 76, 88, 120, 124, 152, 152, 152, 160, 192, 212, 236, 288, 288, 288, 352, 372, 372, 372, 376, 420, 496, 528, 600, 604, 604, 632, 724, 728, 740, 740, 740, 788, 932, 964]

cp's OEIS Frontend

A276113 Number of 2 X 2 matrices with entries in {0,1,...,n} and permanent = (trace)^2 with no entry repeated.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	4
5	4
6	4
7	8
8	12
9	24
10	24
11	24
12	32
13	52
14	56
15	56
16	76
17	76
18	88
19	120
20	124
21	152
22	152
23	152
24	160
25	192
26	212
27	236
28	288
29	288
30	288
31	352
32	372
33	372
34	372
35	376
36	420
37	496
38	528
39	600
40	604
41	604
42	632
43	724
44	728
45	740
46	740
47	740
48	788
49	932
50	964

n	a(n)
0	0
1	0
2	0
3	0
4	4
5	4
6	4
7	8
8	12
9	24
10	24
11	24
12	32
13	52
14	56
15	56
16	76
17	76
18	88
19	120
20	124
21	152
22	152
23	152
24	160
25	192
26	212
27	236
28	288
29	288
30	288
31	352
32	372
33	372
34	372
35	376
36	420
37	496
38	528
39	600
40	604
41	604
42	632
43	724
44	728
45	740
46	740
47	740
48	788
49	932
50	964

n	a(n)
0	0
1	0
2	0
3	0
4	4
5	4
6	4
7	8
8	12
9	24
10	24
11	24
12	32
13	52
14	56
15	56
16	76
17	76
18	88
19	120
20	124
21	152
22	152
23	152
24	160
25	192
26	212
27	236
28	288
29	288
30	288
31	352
32	372
33	372
34	372
35	376
36	420
37	496
38	528
39	600
40	604
41	604
42	632
43	724
44	728
45	740
46	740
47	740
48	788
49	932
50	964