A211151 - cp's OEIS frontend

A211151 Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant > n.

n	a(n)
1	24
2	196
3	784
4	2304
5	5324
6	10964
7	19756
8	33772
9	53496
10	81396
11	118452
12	168324
13	229964
14	310132
15	407964
16	527644
17	670888
18	844896
19	1045916
20	1286220
21	1560508
22	1879548
23	2244404
24	2664180
25	3130076
26	3663856
27	4260240
28	4927920
29	5665992

[24, 196, 784, 2304, 5324, 10964, 19756, 33772, 53496, 81396, 118452, 168324, 229964, 310132, 407964, 527644, 670888, 844896, 1045916, 1286220, 1560508, 1879548, 2244404, 2664180, 3130076, 3663856, 4260240, 4927920, 5665992]

cp's OEIS Frontend

A211151 Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant > n.

Table of values

List of values