Number of nX3 0..1 arrays with every element unequal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A317736

Number of nX3 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) =1a(2) =1a(3) =3a(4) =2a(5) =4a(6) =6a(7) =14a(8) =14a(9) =22a(10) =43a(11) =68a(12) =82a(13) =147a(14) =246a(15) =360a(16) =516a(17) =888a(18) =1385a(19) =2046a(20) =3165a(21) =5185a(22) =7888a(23) =11991a(24) =18930a(25) =29960a(26) =45643a(27) =70736a(28) =111396a(29) =173435

External references