A277044 - cp's OEIS frontend

A277044 Number of 2 X 2 matrices with entries in {0,1,...,n} and even determinant with no entry repeated.

n	a(n)
0	0
1	0
2	0
3	16
4	96
5	216
6	600
7	1008
8	2064
9	3040
10	5280
11	7200
12	11280
13	14616
14	21336
15	26656
16	36960
17	44928
18	59904
19	71280
20	92160
21	107800
22	135960
23	156816
24	193776
25	220896
26	268320
27	302848
28	362544
29	405720
30	479640
31	532800
32	623040
33	687616
34	796416
35	873936
36	1003680
37	1095768
38	1248984
39	1357360
40	1536720
41	1663200

[0, 0, 0, 16, 96, 216, 600, 1008, 2064, 3040, 5280, 7200, 11280, 14616, 21336, 26656, 36960, 44928, 59904, 71280, 92160, 107800, 135960, 156816, 193776, 220896, 268320, 302848, 362544, 405720, 479640, 532800, 623040, 687616, 796416, 873936, 1003680, 1095768, 1248984, 1357360, 1536720, 1663200]

cp's OEIS Frontend

A277044 Number of 2 X 2 matrices with entries in {0,1,...,n} and even determinant with no entry repeated.

Table of values

List of values