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.

A293090 Number of 4 X n 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

Table of values

n a(n)
1 0
2 10
3 498
4 8108
5 125848
6 1900201
7 28709764
8 435581165
9 6638075636
10 101571134541
11 1559620441607
12 24020341461662
13 370919586815724
14 5740889185248758
15 89034754024149656
16 1383318002074531596
17 21526968518644809557

List of values

[0, 10, 498, 8108, 125848, 1900201, 28709764, 435581165, 6638075636, 101571134541, 1559620441607, 24020341461662, 370919586815724, 5740889185248758, 89034754024149656, 1383318002074531596, 21526968518644809557]

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

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