Number of nX7 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.

A303681

Number of nX7 0..1 arrays with every element unequal to 0, 1 or 3 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =21a(1) =103a(2) =57a(3) =90a(4) =150a(5) =245a(6) =367a(7) =509a(8) =697a(9) =957a(10) =1311a(11) =1851a(12) =2671a(13) =3869a(14) =5547a(15) =7907a(16) =11275a(17) =16101a(18) =22959a(19) =32717a(20) =46663a(21) =66633a(22) =95139a(23) =135763a(24) =193701a(25) =276435a(26) =394533a(27) =563013a(28) =803377a(29) =1146445

External references