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.

A188409 Number of (8*n) X n binary arrays with rows in nonincreasing order, 8 ones in every column and no more than 2 ones in any row.

Table of values

n a(n)
0 1
1 1
2 9
3 215
4 13825
5 1865715
6 472211360
7 205617134345
8 144413237202513
9 155491132440121969
10 246331815235550280739
11 555051611796729847585857
12 1728979263188082473586904451
13 7267279122553798970928760164349
14 40366145202716102133415620482175732
15 290962702320861139000003963988839815695

List of values

[1, 1, 9, 215, 13825, 1865715, 472211360, 205617134345, 144413237202513, 155491132440121969, 246331815235550280739, 555051611796729847585857, 1728979263188082473586904451, 7267279122553798970928760164349, 40366145202716102133415620482175732, 290962702320861139000003963988839815695]

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

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