The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A353879 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A353879

Number of tilings of a 4 X n rectangle using right trominoes, dominoes and 1 X 1 tiles.
(history; published version)

#30 by Michael De Vlieger at Sat Jan 14 12:41:39 EST 2023

STATUS

proposed

approved

#29 by Michel Marcus at Sat Jan 14 11:43:07 EST 2023

STATUS

editing

proposed

#28 by Michel Marcus at Sat Jan 14 11:43:04 EST 2023

LINKS

<a href="/index/Rec#order_909">Index entries for linear recurrences with constant coefficients</a>, signature (14,183,-37,-1929,2419,-212,-333,25,15).

STATUS

approved

editing

#27 by Jon E. Schoenfield at Sat May 14 22:35:44 EDT 2022

STATUS

editing

approved

#26 by Jon E. Schoenfield at Sat May 14 22:35:36 EDT 2022

COMMENTS

Tiling For tiling algorithm see A351322.

EXAMPLE

a(2)=189.

PROG

(Maxima), see See A352589.

STATUS

approved

editing

#25 by Alois P. Heinz at Wed May 11 16:00:07 EDT 2022

STATUS

proposed

approved

#24 by Alois P. Heinz at Wed May 11 09:50:10 EDT 2022

STATUS

editing

proposed

Discussion

Wed May 11

09:50

Alois P. Heinz: yes, it is better now ...

#23 by Alois P. Heinz at Wed May 11 09:50:02 EDT 2022

EXAMPLE

r=1: | _| | _| | |_| |_2_| r=0: 71 (= A030186(4)

STATUS

proposed

editing

#22 by Michel Marcus at Wed May 11 05:03:13 EDT 2022

STATUS

editing

proposed

#21 by Michel Marcus at Wed May 11 05:02:56 EDT 2022

EXAMPLE

Result: a(2) = 71+92+26 = 189.