The Integer-Sequence for the Number of Monomer-Dimer Tilings of an n by n Chessboard Starts With: 1, 7, 131, 10012, 2810694, 2989126727, 11945257052321, 179788343101980135, 10185111919160666118608, 2172138783673094193937750015, 1743829823240164494694386437970640, 5270137993816086266962874395450234534887, 59956919824257750508655631107474672284499736089, Thanks to Zeilberger's Maple Package DOMINO

By Shalosh B. Ekhad

Written: 5:00 PM, Oct. 13, 1997.

This article, in addition to answering a question of Steve Finch, marks another `first' of its author: it is body-less. The title (and its footnote) says it all!

Note Added 8:40 PM, Oct. 13, 1997: Steve Finch informed me that Jennifer Henry has already computed this sequence up to n=21.

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