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.

A293261 Number of fixed polyominoes without holes that have a width and height of n.

Table of values

n a(n)
1 1
2 5
3 106
4 6074
5 943340
6 419355340
7 554485727288
8 2208574156731474
9 26609978139626497670
10 973224195603423767343946
11 108342096917091380628767818812
12 36763211016528549310068224122368860
13 38044287043749436284594644308861499605492

List of values

[1, 5, 106, 6074, 943340, 419355340, 554485727288, 2208574156731474, 26609978139626497670, 973224195603423767343946, 108342096917091380628767818812, 36763211016528549310068224122368860, 38044287043749436284594644308861499605492]

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

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