Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A318347

Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =8a(1) =11a(2) =21a(3) =29a(4) =62a(5) =136a(6) =279a(7) =624a(8) =1344a(9) =2941a(10) =6444a(11) =14202a(12) =31437a(13) =69791a(14) =155037a(15) =344892a(16) =766957a(17) =1706073a(18) =3794544a(19) =8440354a(20) =18771770a(21) =41756133a(22) =92878060a(23) =206605597a(24) =459593314a(25) =1022399772a(26) =2274386877a(27) =5059572712a(28) =11255394242

External references