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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.

A270069 Number of tilings of a 9 X n rectangle using monominoes and trominoes of any shape.

Table of values

n a(n)
0 1
1 19
2 13413
3 5952243
4 2626057921
5 1162378878394
6 517174361985073
7 229681994753502100
8 101965922336345576219
9 45283517791861200639757
10 20109634299824273864511862
11 8930062817269356408791188106
12 3965614916098256915340694883017
13 1761030770921730133912679646624228

List of values

[1, 19, 13413, 5952243, 2626057921, 1162378878394, 517174361985073, 229681994753502100, 101965922336345576219, 45283517791861200639757, 20109634299824273864511862, 8930062817269356408791188106, 3965614916098256915340694883017, 1761030770921730133912679646624228]

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

Content is available under The OEIS End-User License Agreement.