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.

A220333 Equals two maps: number of 6Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal and antidiagonal neighbors in a random 0..1 6Xn array.

Table of values

n a(n)
1 1
2 351
3 15316
4 876714
5 46094354
6 2680626797

List of values

[1, 351, 15316, 876714, 46094354, 2680626797]

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

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