The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A049086 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A049086

Number of tilings of 4 X 3n rectangle by 1 X 3 rectangles. Rotations and reflections are considered distinct tilings.
(history; published version)

#54 by R. J. Mathar at Sat Dec 10 09:29:17 EST 2022

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editing

approved

#53 by R. J. Mathar at Sat Dec 10 09:29:13 EST 2022

COMMENTS

The inverse INVERT transform yields A052530 (where A052530(0)=1). - R. J. Mathar, Nov 22 2013

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approved

editing

#52 by Peter Luschny at Fri Jun 10 06:14:33 EDT 2022

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reviewed

approved

#51 by Vaclav Kotesovec at Fri Jun 10 01:56:26 EDT 2022

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proposed

reviewed

#50 by Michel Marcus at Fri Jun 10 00:33:55 EDT 2022

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editing

proposed

#49 by Michel Marcus at Fri Jun 10 00:33:50 EDT 2022

LINKS

Mudit Aggarwal and Samrith Ram, <a href="https://arxiv.org/abs/2206.04437">Generating functions for straight polyomino tilings of narrow rectangles</a>, arXiv:2206.04437 [math.CO], 2022.

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approved

editing

#48 by Wesley Ivan Hurt at Sun Nov 07 10:06:33 EST 2021

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proposed

approved

#47 by Michel Marcus at Sun Nov 07 01:07:48 EST 2021

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editing

proposed

#46 by Michel Marcus at Sun Nov 07 01:07:39 EST 2021

MATHEMATICA

CoefficientList[Series[(1-x)^2/(1-5x+3x^2-x^3), {x, 0, 40}], x] - _(* _M. Poyraz Torcuk_, Nov 06 2021 *)

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proposed

editing

Discussion

Sun Nov 07

01:07

Michel Marcus: mma comment

#45 by M. Poyraz Torcuk at Sat Nov 06 14:32:24 EDT 2021

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editing

proposed