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

A305343

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

Terms

    a(0) =5a(1) =21a(2) =28a(3) =77a(4) =199a(5) =454a(6) =1074a(7) =2619a(8) =6216a(9) =14782a(10) =35494a(11) =84850a(12) =202493a(13) =484472a(14) =1158594a(15) =2768565a(16) =6619260a(17) =15826963a(18) =37833884a(19) =90447825a(20) =216242881a(21) =516964232a(22) =1235890365a(23) =2954669861a(24) =7063719452a(25) =16887142919a(26) =40372113631a(27) =96517561505

External references