Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

A299517

Number of nX4 0..1 arrays with every element equal to 0, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =8a(4) =41a(5) =117a(6) =476a(7) =1743a(8) =7078a(9) =28743a(10) =116832a(11) =478171a(12) =1955738a(13) =8011036a(14) =32816061a(15) =134450866a(16) =550917593a(17) =2257434204a(18) =9250305870a(19) =37905245020a(20) =155326182456a(21) =636489181785

External references