Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

A299092

Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =13a(2) =20a(3) =41a(4) =101a(5) =242a(6) =578a(7) =1385a(8) =3368a(9) =8216a(10) =20014a(11) =48885a(12) =119555a(13) =292427a(14) =715827a(15) =1753080a(16) =4294103a(17) =10521578a(18) =25786055a(19) =63204089a(20) =154942532a(21) =379879302a(22) =931443529a(23) =2284029958a(24) =5601114152a(25) =13736265904a(26) =33688529855a(27) =82624915345

External references