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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.

A233807 Number of tilings of an n X n square using right trominoes and at most one monomino.

Table of values

n a(n)
0 1
1 1
2 4
3 0
4 16
5 128
6 162
7 34528
8 943096
9 1193600
10 3525377600
11 480585761344
12 2033502499954
13 46983507796973152
14 32908187880881958736
15 458324092996867592192
16 83153202122213272708832688
17 299769486068040749617049301344

List of values

[1, 1, 4, 0, 16, 128, 162, 34528, 943096, 1193600, 3525377600, 480585761344, 2033502499954, 46983507796973152, 32908187880881958736, 458324092996867592192, 83153202122213272708832688, 299769486068040749617049301344]

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

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