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.

A230178 Number of n X n 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value 2-x(i,j).

Table of values

n a(n)
1 0
2 9
3 231
4 73857
5 133265847
6 1576417829097
7 117863748242661711
8 56231441027001164749647
9 170772883022204028026156020737
10 3303166614870365380110300414534929643

List of values

[0, 9, 231, 73857, 133265847, 1576417829097, 117863748242661711, 56231441027001164749647, 170772883022204028026156020737, 3303166614870365380110300414534929643]

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

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