A224676 - cp's OEIS frontend

A224676 T(n,k)=Number of (n+1)X(k+1) 0..2 matrices with each 2X2 subblock idempotent.

n	a(n)
1	12
2	25
3	25
4	41
5	50
6	41
7	70
8	76
9	76
10	70
11	115
12	123
13	108
14	123
15	115
16	189
17	191
18	170
19	170
20	191
21	189
22	308
23	300
24	257
25	260
26	257
27	300
28	308
29	501
30	470
31	398
32	381
33	381
34	398
35	470
36	501
37	813
38	741
39	617
40	573
41	542
42	573
43	617
44	741
45	813
46	1318
47	1173
48	967
49	864
50	793
51	793
52	864
53	967
54	1173
55	1318

[12, 25, 25, 41, 50, 41, 70, 76, 76, 70, 115, 123, 108, 123, 115, 189, 191, 170, 170, 191, 189, 308, 300, 257, 260, 257, 300, 308, 501, 470, 398, 381, 381, 398, 470, 501, 813, 741, 617, 573, 542, 573, 617, 741, 813, 1318, 1173, 967, 864, 793, 793, 864, 967, 1173, 1318]

cp's OEIS Frontend

A224676 T(n,k)=Number of (n+1)X(k+1) 0..2 matrices with each 2X2 subblock idempotent.

Table of values

List of values