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

A297871

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

Terms

    a(0) =0a(1) =3a(2) =0a(3) =3a(4) =0a(5) =3a(6) =6a(7) =23a(8) =68a(9) =205a(10) =572a(11) =1553a(12) =4208a(13) =11405a(14) =30988a(15) =84553a(16) =231176a(17) =632915a(18) =1734004a(19) =4751591a(20) =13021550a(21) =35685855a(22) =97797264a(23) =268015939a(24) =734511376a(25) =2012982445a(26) =5516772882a(27) =15119337301a(28) =41436399090a(29) =113561805901

External references