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.

A233151 Number of n X n 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally or antidiagonally.

Table of values

n a(n)
1 3
2 24
3 432
4 17496
5 1658232
6 367125912
7 191184793128
8 234385100907480
9 677856222475099560
10 4627785508146660629232
11 74650443539914896103253016
12 2846446729148572555427535908448
13 256684477494955879310882598953790768

List of values

[3, 24, 432, 17496, 1658232, 367125912, 191184793128, 234385100907480, 677856222475099560, 4627785508146660629232, 74650443539914896103253016, 2846446729148572555427535908448, 256684477494955879310882598953790768]

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

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