A209977 - cp's OEIS frontend

A209977 Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant 5.

n	a(n)
0	0
1	0
2	0
3	3
4	9
5	45
6	53
7	77
8	93
9	117
10	153
11	193
12	209
13	257
14	281
15	353
16	385
17	449
18	473
19	545
20	617
21	665
22	705
23	793
24	825
25	985
26	1033
27	1105
28	1153
29	1265
30	1337
31	1457
32	1521
33	1601
34	1665
35	1881
36	1929
37	2073
38	2145
39	2241
40	2385
41	2545
42	2593
43	2761
44	2841
45	3057
46	3145

[0, 0, 0, 3, 9, 45, 53, 77, 93, 117, 153, 193, 209, 257, 281, 353, 385, 449, 473, 545, 617, 665, 705, 793, 825, 985, 1033, 1105, 1153, 1265, 1337, 1457, 1521, 1601, 1665, 1881, 1929, 2073, 2145, 2241, 2385, 2545, 2593, 2761, 2841, 3057, 3145]

cp's OEIS Frontend

A209977 Number of 2 X 2 matrices having all elements in {0,1,...,n} and determinant 5.

Table of values

List of values