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.

A269056 Number of 5Xn 0..2 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling two not more than once.

Table of values

n a(n)
1 243
2 2430
3 17346
4 183072
5 1643376
6 15547380
7 140497512
8 1273499256
9 11354964888
10 100764874440
11 886829123676
12 7765850889120
13 67643548943508
14 586749197487720
15 5069733374448192
16 43657996370224608
17 374818434125094900

List of values

[243, 2430, 17346, 183072, 1643376, 15547380, 140497512, 1273499256, 11354964888, 100764874440, 886829123676, 7765850889120, 67643548943508, 586749197487720, 5069733374448192, 43657996370224608, 374818434125094900]

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

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