Number of nX3 0..1 arrays with every element unequal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

A305447

Number of nX3 0..1 arrays with every element unequal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =11a(2) =7a(3) =20a(4) =44a(5) =77a(6) =181a(7) =379a(8) =849a(9) =1799a(10) =4154a(11) =9242a(12) =20384a(13) =46987a(14) =105477a(15) =238364a(16) =544013a(17) =1234035a(18) =2805803a(19) =6392808a(20) =14558529a(21) =33157368a(22) =75581441a(23) =172296118a(24) =392727236a(25) =895513084a(26) =2042029380a(27) =4656342833a(28) =10619040244a(29) =24217647660

External references