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.

A303089 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 64
2 21
3 5472
4 4182
5 615471
6 4862916
7 266882021
8 5924274499
9 231312682374
10 7326136324116
11 265724475520255
12 9228359438652216
13 330920558831885611
14 11758758712910364555
15 421228402696480451106
16 15057312628686341086187

List of values

[64, 21, 5472, 4182, 615471, 4862916, 266882021, 5924274499, 231312682374, 7326136324116, 265724475520255, 9228359438652216, 330920558831885611, 11758758712910364555, 421228402696480451106, 15057312628686341086187]

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

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