Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 6 and the upper left element equal to 0.
A267428
Number of 6Xn arrays containing n copies of 0..6-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 6 and the upper left element equal to 0.
Terms
- a(0) =120a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =15a(12) =192a(13) =3064a(14) =47143a(15) =596666a(16) =6335112a(17) =57993446a(18) =465509399a(19) =3352084272a(20) =21950707367a(21) =132484328850
External references
- oeis: A267428