A279018 - cp's OEIS frontend

A279018 Number of 2 X 2 matrices having entries in {-n,...,0,..,n} and permanent=trace with no entry repeated.

n	a(n)
0	0
1	0
2	8
3	24
4	56
5	100
6	156
7	236
8	320
9	408
10	540
11	692
12	844
13	1044
14	1228
15	1368
16	1592
17	1884
18	2180
19	2500
20	2764
21	2996
22	3356
23	3756
24	4080
25	4456
26	4884
27	5276
28	5740
29	6252
30	6740
31	7316
32	7868
33	8340
34	8860
35	9352
36	9896
37	10628
38	11324

[0, 0, 8, 24, 56, 100, 156, 236, 320, 408, 540, 692, 844, 1044, 1228, 1368, 1592, 1884, 2180, 2500, 2764, 2996, 3356, 3756, 4080, 4456, 4884, 5276, 5740, 6252, 6740, 7316, 7868, 8340, 8860, 9352, 9896, 10628, 11324]

cp's OEIS Frontend

A279018 Number of 2 X 2 matrices having entries in {-n,...,0,..,n} and permanent=trace with no entry repeated.

Table of values

List of values