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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.

A361273 Number of 1324-avoiding even Grassmannian permutations of size n.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 6
5 13
6 20
7 37
8 47
9 81
10 91
11 151
12 156
13 253
14 246
15 393
16 365
17 577
18 517
19 811
20 706
21 1101
22 936
23 1453
24 1211
25 1873
26 1535
27 2367
28 1912
29 2941
30 2346
31 3601
32 2841
33 4353
34 3401
35 5203
36 4030
37 6157
38 4732
39 7221
40 5511
41 8401
42 6371
43 9703
44 7316
45 11133
46 8350
47 12697
48 9477
49 14401
50 10701

List of values

[1, 1, 1, 3, 6, 13, 20, 37, 47, 81, 91, 151, 156, 253, 246, 393, 365, 577, 517, 811, 706, 1101, 936, 1453, 1211, 1873, 1535, 2367, 1912, 2941, 2346, 3601, 2841, 4353, 3401, 5203, 4030, 6157, 4732, 7221, 5511, 8401, 6371, 9703, 7316, 11133, 8350, 12697, 9477, 14401, 10701]

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

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