A211416 - cp's OEIS frontend

A211416 Number of self-inverse 2 X 2 matrices with all terms in {-n,...,0,...,n}.

n	a(n)
0	0
1	14
2	22
3	38
4	54
5	70
6	86
7	102
8	134
9	150
10	166
11	182
12	214
13	230
14	246
15	278
16	310
17	326
18	342
19	358
20	390
21	422
22	438
23	454
24	518
25	534
26	550
27	566
28	598
29	614
30	646
31	662
32	694
33	726
34	742
35	774
36	806
37	822
38	838
39	870
40	934
41	950
42	982
43	998
44	1030
45	1062
46	1078
47	1094
48	1158
49	1174

[0, 14, 22, 38, 54, 70, 86, 102, 134, 150, 166, 182, 214, 230, 246, 278, 310, 326, 342, 358, 390, 422, 438, 454, 518, 534, 550, 566, 598, 614, 646, 662, 694, 726, 742, 774, 806, 822, 838, 870, 934, 950, 982, 998, 1030, 1062, 1078, 1094, 1158, 1174]

cp's OEIS Frontend

A211416 Number of self-inverse 2 X 2 matrices with all terms in {-n,...,0,...,n}.

Table of values

List of values