Number of maximal independent sets in the 4 X n king graph.

Terms

a(0) =1a(1) =3a(2) =12a(3) =22a(4) =79a(5) =194a(6) =537a(7) =1519a(8) =4011a(9) =11258a(10) =30506a(11) =83661a(12) =229754a(13) =627171a(14) =1721547a(15) =4710045a(16) =12901630a(17) =35342272a(18) =96764537a(19) =265067580a(20) =725878627a(21) =1988023833a(22) =5444771405a(23) =14911382924a(24) =40839083772a(25) =111846316151a(26) =306317816028a(27) =838924085421