A210001 - cp's OEIS frontend

A210001 Number of 2 X 2 matrices having all elements in {1,2,...,n} and determinant 3.

n	a(n)
0	0
1	0
2	1
3	7
4	11
5	23
6	39
7	59
8	71
9	115
10	127
11	163
12	199
13	243
14	263
15	339
16	367
17	427
18	471
19	539
20	567
21	683
22	719
23	803
24	879
25	955
26	999
27	1139
28	1183
29	1291
30	1367
31	1483
32	1543
33	1739
34	1799
35	1891
36	1983
37	2123
38	2191
39	2427
40	2487
41	2643
42	2759
43	2923
44	2999
45	3187
46	3271

[0, 0, 1, 7, 11, 23, 39, 59, 71, 115, 127, 163, 199, 243, 263, 339, 367, 427, 471, 539, 567, 683, 719, 803, 879, 955, 999, 1139, 1183, 1291, 1367, 1483, 1543, 1739, 1799, 1891, 1983, 2123, 2191, 2427, 2487, 2643, 2759, 2923, 2999, 3187, 3271]

cp's OEIS Frontend

A210001 Number of 2 X 2 matrices having all elements in {1,2,...,n} and determinant 3.

Table of values

List of values