A211141 - cp's OEIS frontend

A211141 Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant n-1.

n	a(n)
0	0
1	33
2	52
3	156
4	240
5	492
6	472
7	1072
8	832
9	1612
10	1540
11	2408
12	1680
13	4144
14	2296
15	4064
16	4352
17	5900
18	3592
19	8236
20	4464
21	9544
22	7712
23	9168
24	6208
25	15984
26	8812
27	12232
28	11968
29	17504
30	9464
31	23712
32	10976
33	21772
34	17440
35	19960

[0, 33, 52, 156, 240, 492, 472, 1072, 832, 1612, 1540, 2408, 1680, 4144, 2296, 4064, 4352, 5900, 3592, 8236, 4464, 9544, 7712, 9168, 6208, 15984, 8812, 12232, 11968, 17504, 9464, 23712, 10976, 21772, 17440, 19960]

cp's OEIS Frontend

A211141 Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant n-1.

Table of values

List of values