[seqfan] Re: How many ways to dissect a square into 4 congruent pieces

[Don Reble]

> %S A113900 1,6,255,92263,280864514

> I obtain the same values for a(1)-a(4), but a different
> value for a(5) (see draft), so a third opinion would be nice...

    start  quantity
    ----- ---------
    (0,1)  81253506
    (0,2)  64730147
    (0,3)  55551204
    (0,4)  53152126
    (0,5)  26348071
    Total 281035054

    Giovanni's "quartering.pdf" page 4 looks just like my picture.
    Same order, same orientation, same ten-column arrangement.
    Maybe our opinions count as only one. :-(

-- 
Don Reble  djr at nk.ca