Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 7 and the upper left element equal to 0.
A267429
Number of 7Xn arrays containing n copies of 0..7-1 with every element equal to or 1 greater than any west, northeast or northwest neighbors modulo 7 and the upper left element equal to 0.
Terms
- a(0) =720a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =1a(8) =1a(9) =1a(10) =1a(11) =1a(12) =1a(13) =34a(14) =701a(15) =19074a(16) =522450a(17) =11762912a(18) =217691742a(19) =3402077276
External references
- oeis: A267429