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.

A222971 Number of 3 X (n+1) 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope.

Table of values

n a(n)
1 1
2 6
3 96
4 576
5 5180
6 28836
7 222887
8 1241310
9 8712264
10 48837168
11 328280478
12 1854039060
13 12126536066
14 69047705664
15 443482507552
16 2544063717888
17 16136462307440
18 93109093464048
19 585311170019020
20 3393940344415872

List of values

[1, 6, 96, 576, 5180, 28836, 222887, 1241310, 8712264, 48837168, 328280478, 1854039060, 12126536066, 69047705664, 443482507552, 2544063717888, 16136462307440, 93109093464048, 585311170019020, 3393940344415872]