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.

A230180 Number of n X 4 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 9
2 159
3 3411
4 73857
5 1603431
6 34825803
7 756450105
8 16430979183
9 356900507139
10 7752307003185
11 168389408761527
12 3657619992450939
13 79447894698990441
14 1725703595660236095
15 37484352623641494963
16 814205113293390761697

List of values

[9, 159, 3411, 73857, 1603431, 34825803, 756450105, 16430979183, 356900507139, 7752307003185, 168389408761527, 3657619992450939, 79447894698990441, 1725703595660236095, 37484352623641494963, 814205113293390761697]

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

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