Number of nX3 0..1 arrays with every element equal to 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

A298082

Number of nX3 0..1 arrays with every element equal to 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =3a(2) =0a(3) =3a(4) =1a(5) =7a(6) =18a(7) =52a(8) =144a(9) =405a(10) =1124a(11) =3113a(12) =8688a(13) =24346a(14) =68385a(15) =192524a(16) =542537a(17) =1529960a(18) =4316175a(19) =12178973a(20) =34370746a(21) =97008377a(22) =273813995a(23) =772895361a(24) =2181712563a(25) =6158599574a(26) =17384869895a(27) =49075425772a(28) =138534755824a(29) =391070202040

External references