A210002 - cp's OEIS frontend

A210002 Number of 2 X 2 matrices having all elements in {1,2,...,n} and determinant 4.

n	a(n)
0	0
1	0
2	0
3	4
4	16
5	26
6	44
7	62
8	104
9	122
10	164
11	198
12	256
13	298
14	364
15	390
16	480
17	538
18	604
19	670
20	792
21	834
22	948
23	1030
24	1120
25	1194
26	1332
27	1398
28	1584
29	1690
30	1780
31	1894
32	2080
33	2154
34	2340
35	2430
36	2616
37	2754
38	2964
39	3054
40	3240
41	3394
42	3532
43	3694
44	4008
45	4098

[0, 0, 0, 4, 16, 26, 44, 62, 104, 122, 164, 198, 256, 298, 364, 390, 480, 538, 604, 670, 792, 834, 948, 1030, 1120, 1194, 1332, 1398, 1584, 1690, 1780, 1894, 2080, 2154, 2340, 2430, 2616, 2754, 2964, 3054, 3240, 3394, 3532, 3694, 4008, 4098]

cp's OEIS Frontend

A210002 Number of 2 X 2 matrices having all elements in {1,2,...,n} and determinant 4.

Table of values

List of values