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.

A303312 Number of nX6 0..1 arrays with every element equal to 0, 1, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 13
2 13
3 67
4 128
5 410
6 1221
7 3453
8 10223
9 30247
10 88071
11 257997
12 758575
13 2222443
14 6510901
15 19099863
16 56003627
17 164158635
18 481322825
19 1411283805
20 4137560893
21 12130815503
22 35567022201
23 104278542849
24 305732562651
25 896380484697

List of values

[13, 13, 67, 128, 410, 1221, 3453, 10223, 30247, 88071, 257997, 758575, 2222443, 6510901, 19099863, 56003627, 164158635, 481322825, 1411283805, 4137560893, 12130815503, 35567022201, 104278542849, 305732562651, 896380484697]

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

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