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.

A302276 Number of n X 6 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 5
2 45
3 162
4 649
5 3621
6 15862
7 69601
8 385242
9 1809350
10 8397586
11 43630510
12 211879132
13 1010098204
14 5093387513
15 24992533872
16 120955915176
17 601661729016
18 2960280723199
19 14445754762414
20 71411159890125
21 351516742426348

List of values

[5, 45, 162, 649, 3621, 15862, 69601, 385242, 1809350, 8397586, 43630510, 211879132, 1010098204, 5093387513, 24992533872, 120955915176, 601661729016, 2960280723199, 14445754762414, 71411159890125, 351516742426348]

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

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