A211063 - cp's OEIS frontend

A211063 Number of 2 X 2 matrices having all terms in {1,...,n} and determinant >=3n.

n	a(n)
0	0
1	0
2	0
3	0
4	8
5	38
6	122
7	284
8	589
9	1080
10	1848
11	2933
12	4515
13	6577
14	9366
15	12888
16	17444
17	22928
18	29864
19	37986
20	48057
21	59656
22	73413
23	89307
24	108002
25	129068
26	153386
27	180636
28	212111
29	246683
30	286126
31	329135
32	378047
33	431242
34	490425
35	555118

[0, 0, 0, 0, 8, 38, 122, 284, 589, 1080, 1848, 2933, 4515, 6577, 9366, 12888, 17444, 22928, 29864, 37986, 48057, 59656, 73413, 89307, 108002, 129068, 153386, 180636, 212111, 246683, 286126, 329135, 378047, 431242, 490425, 555118]

cp's OEIS Frontend

A211063 Number of 2 X 2 matrices having all terms in {1,...,n} and determinant >=3n.

Table of values

List of values