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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A224667 Number of 5 X 5 0..n matrices with each 2 X 2 subblock idempotent.

Table of values

n a(n)
1 196
2 260
3 332
4 412
5 500
6 596
7 700
8 812
9 932
10 1060
11 1196
12 1340
13 1492
14 1652
15 1820
16 1996
17 2180
18 2372
19 2572
20 2780
21 2996
22 3220
23 3452
24 3692
25 3940
26 4196
27 4460
28 4732
29 5012
30 5300
31 5596
32 5900
33 6212
34 6532
35 6860
36 7196
37 7540
38 7892
39 8252
40 8620
41 8996
42 9380
43 9772
44 10172

List of values

[196, 260, 332, 412, 500, 596, 700, 812, 932, 1060, 1196, 1340, 1492, 1652, 1820, 1996, 2180, 2372, 2572, 2780, 2996, 3220, 3452, 3692, 3940, 4196, 4460, 4732, 5012, 5300, 5596, 5900, 6212, 6532, 6860, 7196, 7540, 7892, 8252, 8620, 8996, 9380, 9772, 10172]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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