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A232758
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Number of tilings of a 5 X 4n rectangle with 5n tetrominoes of any shape.
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2
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1, 454, 800290, 1601437357, 3241461223149, 6567785027546670, 13308739956169022829, 26968602201880345700924, 54648749693738816337819872, 110739369582262512718466467943, 224400523235840773380469046439552, 454721704049686545819883721501971896
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OFFSET
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0,2
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LINKS
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Alois P. Heinz, Table of n, a(n) for n = 0..250
S. Butler, J. Ekstrand, S. Osborne, TETRIS Tiling, AMS Spring Central Sectional, Iowa State University, April 27-28 2013
R. S. Harris, Counting Polyomino Tilings
Wikipedia, Tetris
Wikipedia, Tetromino
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CROSSREFS
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Quadrisection of column k=5 of A230031.
Sequence in context: A297658 A219006 A092267 * A284430 A206338 A123563
Adjacent sequences: A232755 A232756 A232757 * A232759 A232760 A232761
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KEYWORD
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nonn
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AUTHOR
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Alois P. Heinz, Nov 29 2013
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STATUS
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approved
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