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.

A241104 Number of nX4 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order.

Table of values

n a(n)
1 4
2 36
3 294
4 2436
5 19814
6 162776
7 1333934
8 10937316
9 89651534
10 734979136
11 6025149574
12 49393306556
13 404916355574
14 3319433387656
15 27212098788254
16 223079838087956
17 1828767624421854
18 14991902921730896
19 122900877847563254

List of values

[4, 36, 294, 2436, 19814, 162776, 1333934, 10937316, 89651534, 734979136, 6025149574, 49393306556, 404916355574, 3319433387656, 27212098788254, 223079838087956, 1828767624421854, 14991902921730896, 122900877847563254]

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

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