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.

A233140 Number of n X n 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

Table of values

n a(n)
1 1
2 16
3 13259
4 198313130
5 39758352524643
6 104628720219120084935
7 3612824935976380302597462081
8 1636876887880533270191858718052988313

List of values

[1, 16, 13259, 198313130, 39758352524643, 104628720219120084935, 3612824935976380302597462081, 1636876887880533270191858718052988313]

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

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