Number of nX5 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

A302677

Number of nX5 0..1 arrays with every element equal to 0, 1, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =7a(2) =18a(3) =30a(4) =63a(5) =125a(6) =257a(7) =528a(8) =1085a(9) =2228a(10) =4576a(11) =9401a(12) =19311a(13) =39665a(14) =81476a(15) =167363a(16) =343782a(17) =706162a(18) =1450533a(19) =2979557a(20) =6120333a(21) =12571820a(22) =25823881a(23) =53045060a(24) =108960300a(25) =223816249a(26) =459742831a(27) =944361613a(28) =1939821080a(29) =3984602671

External references