A211070 - cp's OEIS frontend

A211070 Number of 2 X 2 matrices having all terms in {1,...,n} and determinant d satisfying -n < d < n.

n	a(n)
1	1
2	10
3	43
4	118
5	263
6	474
7	831
8	1258
9	1893
10	2652
11	3685
12	4748
13	6375
14	7918
15	9931
16	12216
17	15015
18	17654
19	21395
20	24726
21	29253
22	33822
23	39011
24	43906
25	50995
26	57210
27	64431
28	71968
29	81075
30	88962
31	100159
32	109346
33	121107
34	132636
35	145097

[1, 10, 43, 118, 263, 474, 831, 1258, 1893, 2652, 3685, 4748, 6375, 7918, 9931, 12216, 15015, 17654, 21395, 24726, 29253, 33822, 39011, 43906, 50995, 57210, 64431, 71968, 81075, 88962, 100159, 109346, 121107, 132636, 145097]

cp's OEIS Frontend

A211070 Number of 2 X 2 matrices having all terms in {1,...,n} and determinant d satisfying -n < d < n.

Table of values

List of values