A210378 - cp's OEIS frontend

A210378 Number of 2 X 2 matrices with all terms in {0,1,...,n} and even trace.

n	a(n)
0	1
1	8
2	45
3	128
4	325
5	648
6	1225
7	2048
8	3321
9	5000
10	7381
11	10368
12	14365
13	19208
14	25425
15	32768
16	41905
17	52488
18	65341
19	80000
20	97461
21	117128
22	140185
23	165888
24	195625
25	228488
26	266085
27	307328
28	354061
29	405000
30	462241
31	524288
32	593505
33	668168
34	750925
35	839808
36	937765
37	1042568

[1, 8, 45, 128, 325, 648, 1225, 2048, 3321, 5000, 7381, 10368, 14365, 19208, 25425, 32768, 41905, 52488, 65341, 80000, 97461, 117128, 140185, 165888, 195625, 228488, 266085, 307328, 354061, 405000, 462241, 524288, 593505, 668168, 750925, 839808, 937765, 1042568]

cp's OEIS Frontend

A210378 Number of 2 X 2 matrices with all terms in {0,1,...,n} and even trace.

Table of values

List of values