cp's OEIS Frontend

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.

A223961 T(n,k)=Number of nXk 0..3 arrays with antidiagonals unimodal and rows and diagonals nondecreasing.

Table of values

n a(n)
1 4
2 10
3 16
4 20
5 85
6 64
7 35
8 295
9 707
10 256
11 56
12 805
13 3471
14 5864
15 1024
16 84
17 1876
18 12311
19 41006
20 48620
21 4096
22 120
23 3906
24 36028
25 176893
26 485714
27 403104
28 16384
29 165
30 7470
31 92734
32 594286
33 2575955
34 5777663
35 3342081
36 65536
37 220
38 13365
39 217144
40 1718057

List of values

[4, 10, 16, 20, 85, 64, 35, 295, 707, 256, 56, 805, 3471, 5864, 1024, 84, 1876, 12311, 41006, 48620, 4096, 120, 3906, 36028, 176893, 485714, 403104, 16384, 165, 7470, 92734, 594286, 2575955, 5777663, 3342081, 65536, 220, 13365, 217144, 1718057]

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

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