Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

A299577

Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =2a(2) =10a(3) =19a(4) =43a(5) =126a(6) =327a(7) =860a(8) =2401a(9) =6733a(10) =19276a(11) =56854a(12) =170587a(13) =522852a(14) =1632646a(15) =5173538a(16) =16613698a(17) =53913576a(18) =176426909a(19) =581193795a(20) =1924382814a(21) =6396881174a(22) =21327642430a(23) =71268470862a(24) =238556249725a(25) =799536020039

External references