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.

A383256 Number of n X n matrices of nonnegative entries with all columns summing to n and no horizontally adjacent zeros.

Table of values

n a(n)
0 1
1 1
2 7
3 343
4 125465
5 366908001
6 8698468668251
7 1708834003295306868
8 2810884261025802145414705
9 39088555382409783097546399456477
10 4626844513673581956954679383115038810744
11 4688191496359773864437279635019555242588548880831

List of values

[1, 1, 7, 343, 125465, 366908001, 8698468668251, 1708834003295306868, 2810884261025802145414705, 39088555382409783097546399456477, 4626844513673581956954679383115038810744, 4688191496359773864437279635019555242588548880831]

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

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