Number of nX4 0..1 arrays with every element unequal to 0, 1 or 5 king-move adjacent elements, with upper left element zero.

A303715

Number of nX4 0..1 arrays with every element unequal to 0, 1 or 5 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =5a(1) =5a(2) =8a(3) =17a(4) =36a(5) =76a(6) =161a(7) =349a(8) =749a(9) =1604a(10) =3449a(11) =7412a(12) =15912a(13) =34177a(14) =73421a(15) =157693a(16) =338696a(17) =727505a(18) =1562612a(19) =3356300a(20) =7209009a(21) =15484261a(22) =33258581a(23) =71436052a(24) =153437513a(25) =329568260a(26) =707879240a(27) =1520453249a(28) =3265780149a(29) =7014565813

External references