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.

A200771 Number of nX2 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

Table of values

n a(n)
1 3
2 5
3 5
4 20
5 37
6 31
7 144
8 273
9 218
10 1054
11 2009
12 1574
13 7738
14 14793
15 11474
16 57029
17 109296
18 84246
19 421938
20 810268
21 621914
22 3132630
23 6025862
24 4611044
25 23331465
26 44944997
27 34314054
28 174267851
29 336126752
30 256168546
31 1304988740
32 2519821169
33 1917689311

List of values

[3, 5, 5, 20, 37, 31, 144, 273, 218, 1054, 2009, 1574, 7738, 14793, 11474, 57029, 109296, 84246, 421938, 810268, 621914, 3132630, 6025862, 4611044, 23331465, 44944997, 34314054, 174267851, 336126752, 256168546, 1304988740, 2519821169, 1917689311]

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

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