

A098926


Permanent of the (0,1)matrix with ijth entry equal to zero iff (i=1,j=1),(i=1,j=2),(i=1,j=3),(i=2,j=3),(i=3,j=3),... In other words, the ijth entry of the matrix is zero iff it is on the path which start from the entry (i=1,j=1) and moves in the matrix alternating 3 steps to the right to 3 steps down.


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0, 2, 12, 90, 556, 5242, 42380, 479306, 4817484, 63779034, 767504524, 11661506218, 163541678156, 2806878055610, 44960579074956, 860568917787402, 15502269624912460, 327460573946510746, 6552868832109180044, 151436547414562736234, 3332986639447590230604, 83655126041771262574458
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