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

A299509

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

Terms

    a(0) =1a(1) =7a(2) =15a(3) =29a(4) =63a(5) =167a(6) =477a(7) =1233a(8) =3265a(9) =8727a(10) =23041a(11) =61427a(12) =163443a(13) =434073a(14) =1154961a(15) =3071109a(16) =8165955a(17) =21718237a(18) =57753279a(19) =153583907a(20) =408435961a(21) =1086155913a(22) =2888454053a(23) =7681365667a(24) =20427272161a(25) =54322941315a(26) =144462750163a(27) =384174434645

External references