Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

A298885

Number of nX5 0..1 arrays with every element equal to 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =23a(2) =23a(3) =73a(4) =123a(5) =243a(6) =444a(7) =897a(8) =1801a(9) =3462a(10) =6669a(11) =13291a(12) =25762a(13) =49483a(14) =97860a(15) =193033a(16) =376031a(17) =735990a(18) =1440269a(19) =2815283a(20) =5522803a(21) =10827092a(22) =21196028a(23) =41505035a(24) =81298779a(25) =159266998a(26) =311969014a(27) =611140770a(28) =1197086348a(29) =2345047342

External references