A280588 - cp's OEIS frontend

A280588 Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = determinant.

n	a(n)
0	1
1	1
2	2
3	9
4	18
5	41
6	58
7	97
8	130
9	185
10	226
11	313
12	354
13	457
14	538
15	649
16	738
17	889
18	954
19	1145
20	1266
21	1449
22	1578
23	1809
24	1930
25	2177
26	2362
27	2609
28	2770
29	3129
30	3242
31	3609
32	3810
33	4097
34	4402
35	4793
36	5026
37	5433
38	5674
39	6097
40	6346
41	6929
42	7090
43	7641
44	8010
45	8433
46	8810
47	9369
48	9626
49	10297
50	10690

[1, 1, 2, 9, 18, 41, 58, 97, 130, 185, 226, 313, 354, 457, 538, 649, 738, 889, 954, 1145, 1266, 1449, 1578, 1809, 1930, 2177, 2362, 2609, 2770, 3129, 3242, 3609, 3810, 4097, 4402, 4793, 5026, 5433, 5674, 6097, 6346, 6929, 7090, 7641, 8010, 8433, 8810, 9369, 9626, 10297, 10690]

cp's OEIS Frontend

A280588 Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = determinant.

Table of values

List of values