A210286 - cp's OEIS frontend

A210286 Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant = trace.

n	a(n)
0	1
1	3
2	10
3	18
4	28
5	42
6	56
7	74
8	96
9	118
10	140
11	170
12	200
13	234
14	272
15	302
16	336
17	386
18	432
19	482
20	536
21	578
22	624
23	690
24	752
25	810
26	876
27	938
28	1000
29	1082
30	1156
31	1234
32	1328
33	1402
34	1476
35	1558
36	1632
37	1730
38	1840
39	1926
40	2008
41	2122
42	2228
43	2338
44	2464
45	2554

[1, 3, 10, 18, 28, 42, 56, 74, 96, 118, 140, 170, 200, 234, 272, 302, 336, 386, 432, 482, 536, 578, 624, 690, 752, 810, 876, 938, 1000, 1082, 1156, 1234, 1328, 1402, 1476, 1558, 1632, 1730, 1840, 1926, 2008, 2122, 2228, 2338, 2464, 2554]

cp's OEIS Frontend

A210286 Number of 2 X 2 matrices with all elements in {0,1,...,n} and determinant = trace.

Table of values

List of values