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.

A302380 Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 8
2 2208
3 127535
4 8334338
5 535192095
6 34271733937
7 2195619257236
8 140685735128595
9 9013655138528774
10 577518643711241385
11 37002236612561808562
12 2370775298902153257752
13 151898260084738496346512

List of values

[8, 2208, 127535, 8334338, 535192095, 34271733937, 2195619257236, 140685735128595, 9013655138528774, 577518643711241385, 37002236612561808562, 2370775298902153257752, 151898260084738496346512]

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

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