Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A299801

Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =13a(2) =20a(3) =44a(4) =123a(5) =343a(6) =973a(7) =2774a(8) =7993a(9) =23110a(10) =66714a(11) =192997a(12) =558501a(13) =1615967a(14) =4676936a(15) =13536345a(16) =39177448a(17) =113393194a(18) =328199369a(19) =949923737a(20) =2749424053a(21) =7957828042a(22) =23032842153a(23) =66665439494a(24) =192954061684a(25) =558479378315

External references