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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.

A128445 Number of facets of the Alternating Sign Matrix polytope ASM(n).

Table of values

n a(n)
0 1
1 1
2 2
3 8
4 20
5 40
6 68
7 104
8 148
9 200
10 260
11 328
12 404
13 488
14 580
15 680
16 788
17 904
18 1028
19 1160
20 1300
21 1448
22 1604
23 1768
24 1940
25 2120
26 2308
27 2504
28 2708
29 2920
30 3140
31 3368
32 3604
33 3848
34 4100
35 4360
36 4628
37 4904
38 5188
39 5480
40 5780
41 6088
42 6404
43 6728
44 7060
45 7400
46 7748
47 8104

List of values

[1, 1, 2, 8, 20, 40, 68, 104, 148, 200, 260, 328, 404, 488, 580, 680, 788, 904, 1028, 1160, 1300, 1448, 1604, 1768, 1940, 2120, 2308, 2504, 2708, 2920, 3140, 3368, 3604, 3848, 4100, 4360, 4628, 4904, 5188, 5480, 5780, 6088, 6404, 6728, 7060, 7400, 7748, 8104]

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

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