Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

A304546

Number of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =8a(2) =13a(3) =60a(4) =217a(5) =749a(6) =2822a(7) =10516a(8) =38934a(9) =145185a(10) =542474a(11) =2025645a(12) =7568821a(13) =28294956a(14) =105785530a(15) =395536988a(16) =1479072597a(17) =5531090102a(18) =20684425965a(19) =77354433339a(20) =289289280136

External references