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.

A301958 Number of n X n 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 1
2 5
3 16
4 64
5 311
6 2544
7 33860
8 655332
9 20467528
10 1126897464
11 99461928147
12 13746050749383
13 3153776142960984
14 1195380968976593488
15 725993180042754573732
16 714087263476969685695404

List of values

[1, 5, 16, 64, 311, 2544, 33860, 655332, 20467528, 1126897464, 99461928147, 13746050749383, 3153776142960984, 1195380968976593488, 725993180042754573732, 714087263476969685695404]

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

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