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.

A220934 Equals two maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..2 nX5 array.

Table of values

n a(n)
1 7
2 200
3 5912
4 172904
5 4983202
6 143495572
7 4129000493
8 118791182035
9 3417440488681
10 98313052773312
11 2828261800424005
12 81363108971612428
13 2340643785326878730
14 67335342944117783361
15 1937094540263542667587

List of values

[7, 200, 5912, 172904, 4983202, 143495572, 4129000493, 118791182035, 3417440488681, 98313052773312, 2828261800424005, 81363108971612428, 2340643785326878730, 67335342944117783361, 1937094540263542667587]

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

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