A210366 - cp's OEIS frontend

A210366 Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant >=n.

n	a(n)
0	1
1	3
2	18
3	61
4	168
5	368
6	749
7	1310
8	2235
9	3493
10	5291
11	7640
12	10869
13	14711
14	19860
15	26051
16	33623
17	42618
18	53725
19	66280
20	81577
21	98739
22	118847
23	141800
24	168435
25	197406
26	231100
27	268595
28	310617
29	356763
30	409136
31	465231
32	528830
33	597397
34	673127

[1, 3, 18, 61, 168, 368, 749, 1310, 2235, 3493, 5291, 7640, 10869, 14711, 19860, 26051, 33623, 42618, 53725, 66280, 81577, 98739, 118847, 141800, 168435, 197406, 231100, 268595, 310617, 356763, 409136, 465231, 528830, 597397, 673127]

cp's OEIS Frontend

A210366 Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant >=n.

Table of values

List of values