Fw: sequence A030444

David Wilson davidwwilson at comcast.net
Thu May 20 15:43:44 CEST 2004


Guenter Stertenbrink (Sterten at aol.com) gives me the following sequences for the number
of fixed knight-move-connected polyominoes and fixed zebra-move-connected polyominoes
(zebra = (2,3) leaper).  These polyominoes would not in general be connected in the usual
edge-connected sense.

knight: 1,4,28,234,2162,20972,209608,2135572,22049959,229939414,2416816416 
zebra: 1,4,28,234,2162,21272,218740,2323730,25314097,281299736

The knight sequence is a proposed correction to my sequence A030444.  At the present
time I am unable to pursue verification.  Can someone verify Guenter's sequence to 4 or 5
terms, and if correct, update A030444 and add the new sequence?

Thanks in advance,

Dave Wilson
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