Number of length-n 0..4 arrays with no repeated value differing from the previous repeated value by other than plus or minus one modulo 4+1.
A269674
Number of length-n 0..4 arrays with no repeated value differing from the previous repeated value by other than plus or minus one modulo 4+1.
Terms
- a(0) =5a(1) =25a(2) =120a(3) =570a(4) =2670a(5) =12390a(6) =57030a(7) =260790a(8) =1185990a(9) =5368470a(10) =24204390a(11) =108756150a(12) =487223430a(13) =2177121750a(14) =9706364070a(15) =43188455670a(16) =191830083270a(17) =850727111190
External references
- oeis: A269674