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.

A302002 Number of 5Xn 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

Table of values

n a(n)
1 0
2 34
3 48
4 200
5 2856
6 14016
7 122232
8 813704
9 6066698
10 43025282
11 311301306
12 2237774274
13 16116010598
14 116014746014
15 835190383512
16 6012793756932
17 43286754359604
18 311629669798802
19 2243474218816140
20 16151152920460132

List of values

[0, 34, 48, 200, 2856, 14016, 122232, 813704, 6066698, 43025282, 311301306, 2237774274, 16116010598, 116014746014, 835190383512, 6012793756932, 43286754359604, 311629669798802, 2243474218816140, 16151152920460132]

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

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