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.

A297724 Number of 5Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.

Table of values

n a(n)
1 1
2 280
3 4090
4 34319
5 512354
6 8103241
7 107787351
8 1446088760
9 20410564866
10 284834549399
11 3925719705949
12 54393595038381
13 755754672219017
14 10479694450894966
15 145249271559341180
16 2014480587809008069

List of values

[1, 280, 4090, 34319, 512354, 8103241, 107787351, 1446088760, 20410564866, 284834549399, 3925719705949, 54393595038381, 755754672219017, 10479694450894966, 145249271559341180, 2014480587809008069]

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

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