Number of 5Xn arrays containing n copies of 0..5-1 with every element equal to or 1 greater than any north or west neighbors modulo 5 and the upper left element equal to 0.
A268121
Number of 5Xn arrays containing n copies of 0..5-1 with every element equal to or 1 greater than any north or west neighbors modulo 5 and the upper left element equal to 0.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =15a(4) =111a(5) =1687a(6) =23522a(7) =253472a(8) =2290853a(9) =18470974a(10) =140294987a(11) =1065068657a(12) =8679331941a(13) =80007298457a(14) =822840131716
External references
- oeis: A268121