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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.

A247113 Number of tilings of a 9 X 4n rectangle with 9n tetrominoes of any shape.

Table of values

n a(n)
0 1
1 179399
2 517312744806
3 2045387873615550415
4 8355513115448789147187273
5 34243737232278596352691552132065
6 140387532129057613906130882433658669281
7 575558645377903777492614229836093710424726422
8 2359673678366714374809214450385908918997931183691473

List of values

[1, 179399, 517312744806, 2045387873615550415, 8355513115448789147187273, 34243737232278596352691552132065, 140387532129057613906130882433658669281, 575558645377903777492614229836093710424726422, 2359673678366714374809214450385908918997931183691473]

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

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