Number of nX5 0..1 arrays with every element unequal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A317738

Number of nX5 0..1 arrays with every element unequal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =4a(2) =2a(3) =14a(4) =14a(5) =38a(6) =74a(7) =149a(8) =269a(9) =662a(10) =1294a(11) =2721a(12) =5911a(13) =12084a(14) =25175a(15) =53473a(16) =111383a(17) =233690a(18) =490578a(19) =1030868a(20) =2158490a(21) =4533365a(22) =9504248a(23) =19950172a(24) =41823355a(25) =87810137a(26) =184117052a(27) =386450223a(28) =810444428a(29) =1700925286

External references