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.

A289647 Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically 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 44
3 607
4 8554
5 121162
6 1756800
7 25760875
8 382162921
9 5717697619
10 86172849366
11 1306560879457
12 19912006342895
13 304785181627320
14 4682731916448540
15 72178508386597722
16 1115665066715856620
17 17287052005230219381

List of values

[0, 44, 607, 8554, 121162, 1756800, 25760875, 382162921, 5717697619, 86172849366, 1306560879457, 19912006342895, 304785181627320, 4682731916448540, 72178508386597722, 1115665066715856620, 17287052005230219381]

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

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