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.

A222856 Number of nX2 0..1 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope.

Table of values

n a(n)
1 3
2 6
3 18
4 41
5 123
6 310
7 957
8 2530
9 7848
10 21618
11 67131
12 188835
13 585276
14 1670602
15 5161503
16 14880389
17 45808419
18 133004125
19 408229851
20 1191329175
21 3646802121
22 10684589006
23 32632896159
24 95903053435
25 292350907470
26 861289976308

List of values

[3, 6, 18, 41, 123, 310, 957, 2530, 7848, 21618, 67131, 188835, 585276, 1670602, 5161503, 14880389, 45808419, 133004125, 408229851, 1191329175, 3646802121, 10684589006, 32632896159, 95903053435, 292350907470, 861289976308]

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

Content is available under The OEIS End-User License Agreement.