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.

A181215 Number of nX4 binary matrices with no three 1's adjacent in a line diagonally or antidiagonally.

Table of values

n a(n)
1 16
2 256
3 2500
4 28561
5 337561
6 3857296
7 44408896
8 512750736
9 5909458129
10 68121522001
11 785456787600
12 9055597599504
13 104402987257284
14 1203692301444361
15 13877652596295601
16 159998643202876416
17 1844662908618342400

List of values

[16, 256, 2500, 28561, 337561, 3857296, 44408896, 512750736, 5909458129, 68121522001, 785456787600, 9055597599504, 104402987257284, 1203692301444361, 13877652596295601, 159998643202876416, 1844662908618342400]

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

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