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

A303685

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

Terms

    a(0) =0a(1) =5a(2) =2a(3) =20a(4) =27a(5) =108a(6) =191a(7) =599a(8) =1261a(9) =3503a(10) =8019a(11) =20956a(12) =49932a(13) =126833a(14) =308197a(15) =772321a(16) =1894368a(17) =4716189a(18) =11620491a(19) =28839210a(20) =71214717a(21) =176468284a(22) =436228102a(23) =1080165740a(24) =2671530008a(25) =6612751510a(26) =16359100711a(27) =40486188269a(28) =100169626090

External references