A279063 - cp's OEIS frontend

A279063 Number of 2 X 2 matrices having entries in {0,1,...,n} and determinant in the closed interval [-n,n] with no entry repeated.

n	a(n)
0	0
1	0
2	0
3	16
4	56
5	136
6	296
7	512
8	864
9	1280
10	1912
11	2616
12	3680
13	4760
14	6200
15	7848
16	9792
17	11832
18	14632
19	17280
20	20784
21	24352
22	28480
23	32584
24	38200
25	43168
26	49160
27	55472
28	62936
29	69784
30	79008
31	86944
32	96952
33	106816
34	117672
35	128592
36	142352
37	154088
38	167968

[0, 0, 0, 16, 56, 136, 296, 512, 864, 1280, 1912, 2616, 3680, 4760, 6200, 7848, 9792, 11832, 14632, 17280, 20784, 24352, 28480, 32584, 38200, 43168, 49160, 55472, 62936, 69784, 79008, 86944, 96952, 106816, 117672, 128592, 142352, 154088, 167968]

cp's OEIS Frontend

A279063 Number of 2 X 2 matrices having entries in {0,1,...,n} and determinant in the closed interval [-n,n] with no entry repeated.

Table of values

List of values