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.

A240653 Number of nX5 0..1 arrays with no element equal to exactly one horizontal or vertical neighbor, with new values 0..1 introduced in row major order.

Table of values

n a(n)
1 1
2 6
3 43
4 352
5 2456
6 16629
7 118863
8 863435
9 6296517
10 46082534
11 337974465
12 2482292322
13 18247326003
14 134198700821
15 987225183085
16 7263640120506
17 53448292499747
18 393312676324283
19 2894385928048833
20 21300183245716512

List of values

[1, 6, 43, 352, 2456, 16629, 118863, 863435, 6296517, 46082534, 337974465, 2482292322, 18247326003, 134198700821, 987225183085, 7263640120506, 53448292499747, 393312676324283, 2894385928048833, 21300183245716512]

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

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