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.

A200930 Number of nX1 0..6 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 7
2 21
3 57
4 107
5 151
6 134
7 70
8 906
9 5719
10 22641
11 57330
12 94749
13 91284
14 46026
15 712408
16 5250502
17 23239004
18 63993718
19 111584800
20 110564320
21 55707400
22 931579960
23 7356246430
24 34247930590
25 97967909500
26 175167537020
27 176238424600

List of values

[7, 21, 57, 107, 151, 134, 70, 906, 5719, 22641, 57330, 94749, 91284, 46026, 712408, 5250502, 23239004, 63993718, 111584800, 110564320, 55707400, 931579960, 7356246430, 34247930590, 97967909500, 175167537020, 176238424600]

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

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