A280407 - cp's OEIS frontend

A280407 Number of 2 X 2 matrices with all elements in {-n,..,0,..,n} with permanent = determinant * n.

n	a(n)
0	1
1	45
2	81
3	233
4	289
5	601
6	625
7	1113
8	1153
9	1785
10	1681
11	2761
12	2401
13	3577
14	3505
15	4665
16	4225
17	6185
18	5329
19	7673
20	6945
21	8601
22	7921
23	11033
24	9665
25	12265
26	11793
27	14089
28	12769
29	18073
30	14641
31	19945
32	17281
33	20121
34	20593
35	23961
36	21025
37	25417
38	24177
39	29177
40	25921
41	35449
42	28561
43	36233

[1, 45, 81, 233, 289, 601, 625, 1113, 1153, 1785, 1681, 2761, 2401, 3577, 3505, 4665, 4225, 6185, 5329, 7673, 6945, 8601, 7921, 11033, 9665, 12265, 11793, 14089, 12769, 18073, 14641, 19945, 17281, 20121, 20593, 23961, 21025, 25417, 24177, 29177, 25921, 35449, 28561, 36233]

cp's OEIS Frontend

A280407 Number of 2 X 2 matrices with all elements in {-n,..,0,..,n} with permanent = determinant * n.

Table of values

List of values