A210027 - cp's OEIS frontend

A210027 Number of 2 X 2 matrices having all elements in {1,2,...,n} and determinant 5.

n	a(n)
0	0
1	0
2	0
3	3
4	9
5	23
6	27
7	47
8	59
9	79
10	111
11	147
12	159
13	203
14	223
15	291
16	319
17	379
18	399
19	467
20	535
21	579
22	615
23	699
24	727
25	883
26	927
27	995
28	1039
29	1147
30	1215
31	1331
32	1391
33	1467
34	1527
35	1739
36	1783
37	1923
38	1991
39	2083
40	2223
41	2379
42	2423
43	2587
44	2663
45	2875
46	2959
47	3139

[0, 0, 0, 3, 9, 23, 27, 47, 59, 79, 111, 147, 159, 203, 223, 291, 319, 379, 399, 467, 535, 579, 615, 699, 727, 883, 927, 995, 1039, 1147, 1215, 1331, 1391, 1467, 1527, 1739, 1783, 1923, 1991, 2083, 2223, 2379, 2423, 2587, 2663, 2875, 2959, 3139]

cp's OEIS Frontend

A210027 Number of 2 X 2 matrices having all elements in {1,2,...,n} and determinant 5.

Table of values

List of values