Number of n X 3 0..1 arrays with each 1 adjacent to 0 or 2 king-move neighboring 1s.

A295776

Number of n X 3 0..1 arrays with each 1 adjacent to 0 or 2 king-move neighboring 1s.

Terms

    a(0) =5a(1) =19a(2) =56a(3) =198a(4) =665a(5) =2213a(6) =7479a(7) =25105a(8) =84326a(9) =283532a(10) =952661a(11) =3201517a(12) =10759441a(13) =36157455a(14) =121511416a(15) =408352614a(16) =1372308917a(17) =4611790689a(18) =15498404475a(19) =52083999509a(20) =175033735054a(21) =588219141252

External references