The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A291187 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A291187

Number of 2 X n Sudoku grids ((2*n) X (2*n) grids divided into 2 X n boxes).
(history; published version)

#26 by Susanna Cuyler at Mon Jul 02 20:28:26 EDT 2018

STATUS

proposed

approved

#25 by Michel Marcus at Mon Jul 02 10:07:06 EDT 2018

STATUS

editing

proposed

#24 by Michel Marcus at Mon Jul 02 10:07:03 EDT 2018

LINKS

Kjell Fredrik Pettersen (after work by Ed Russell), <a href="http://www.afjarvis.staff.shef.ac.uk/sudoku/sud25gp.html">There are 4743933602050718 essentially different Sudoku 2x5 grids</a>. In A. F. Jarvis, <a href="http://www.afjarvis.staff.shef.ac.uk/sudoku/">Sudoku enumeration problems</a>. , 2008.

Ed Russell, <a href="http://www.afjarvis.staff.shef.ac.uk/sudoku/sud24gp.html">There are 1673187 essentially different Sudoku 2x4 grids</a>. In A. F. Jarvis, <a href="http://www.afjarvis.staff.shef.ac.uk/sudoku/">Sudoku enumeration problems</a>. , 2008.

Ed Russell and Frazer Jarvis, <a href="http://www.afjarvis.staff.shef.ac.uk/sudoku/sud23gp.html">There are 49 essentially different Sudoku 2x3 grids</a>, 2008.

STATUS

proposed

editing

#23 by M. F. Hasler at Mon Jul 02 10:02:17 EDT 2018

STATUS

editing

proposed

#22 by M. F. Hasler at Mon Jul 02 10:00:57 EDT 2018

LINKS

Ed Russell and Frazer Jarvis, <a href="http://www.afjarvis.staff.shef.ac.uk/sudoku/sud23gp.html">There are 49 essentially different Sudoku 2x3 grids</a>, 2008

STATUS

approved

editing

#21 by N. J. A. Sloane at Sun Aug 20 09:23:59 EDT 2017

STATUS

proposed

approved

#20 by Jon E. Schoenfield at Sun Aug 20 06:23:11 EDT 2017

STATUS

editing

proposed

#19 by Jon E. Schoenfield at Sun Aug 20 06:23:07 EDT 2017

NAME

Number of 2xn 2 X n Sudoku grids ((2*n)x X (2*n) grids divided into 2xn 2 X n boxes).

STATUS

proposed

editing

#18 by Seiichi Manyama at Sun Aug 20 05:53:39 EDT 2017

STATUS

editing

proposed

#17 by Seiichi Manyama at Sun Aug 20 05:26:28 EDT 2017

NAME

Number of 2xn Sudoku grids ((2*n)x(2*n) grids divided into 2xn boxes). .

Discussion

Sun Aug 20

05:45

Seiichi Manyama: It is difficult to assign the title.