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.

A222874 Number of nX4 0..3 arrays with no more than floor(nX4/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

n a(n)
1 11
2 1814
3 409775
4 95867967
5 22794825314
6 5472896849943
7 1322676376672081
8 321195816580955511
9 78284744747263499257
10 19135706630178881122106
11 4688528991184907785652449
12 1151011442556048521433434944

List of values

[11, 1814, 409775, 95867967, 22794825314, 5472896849943, 1322676376672081, 321195816580955511, 78284744747263499257, 19135706630178881122106, 4688528991184907785652449, 1151011442556048521433434944]

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

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