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.

A232330 Number of n X n 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.

Table of values

n a(n)
1 1
2 6
3 74
4 734
5 38986
6 1047700
7 318521414
8 21383016966
9 41587044818288
10 6504751614236146
11 87397564422467956534
12 30467813258936981061662
13 2950963661663407494064125726
14 2230955943109246024221388092190

List of values

[1, 6, 74, 734, 38986, 1047700, 318521414, 21383016966, 41587044818288, 6504751614236146, 87397564422467956534, 30467813258936981061662, 2950963661663407494064125726, 2230955943109246024221388092190]

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

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