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.

A250543 Number of (n+1)X(7+1) 0..3 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)-x(i-1,j) in the j direction.

Table of values

n a(n)
1 4206453
2 64993652
3 555362165
4 3475227442
5 18064444143
6 83356429646
7 355022719767
8 1430573448548
9 5544630982113
10 20906908229344
11 77309801208801
12 281951865918318
13 1018337944028139
14 3653463640888634
15 13050682406346451

List of values

[4206453, 64993652, 555362165, 3475227442, 18064444143, 83356429646, 355022719767, 1430573448548, 5544630982113, 20906908229344, 77309801208801, 281951865918318, 1018337944028139, 3653463640888634, 13050682406346451]

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

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