Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 5 king-move adjacent elements, with upper left element zero.

A303968

Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =21a(1) =237a(2) =186a(3) =842a(4) =2247a(5) =6264a(6) =15517a(7) =40239a(8) =101894a(9) =275913a(10) =742329a(11) =1970215a(12) =5207495a(13) =13783510a(14) =36338058a(15) =96289588a(16) =255453841a(17) =676717260a(18) =1792458697a(19) =4748791014a(20) =12573506308a(21) =33301968773a(22) =88224464420a(23) =233692020122

External references