Number of length 4 arrays x(i), i=1..4 with x(i) in i..i+n and no value appearing more than 3 times.
A250362
Number of length 4 arrays x(i), i=1..4 with x(i) in i..i+n and no value appearing more than 3 times.
Terms
- a(0) =16a(1) =81a(2) =255a(3) =623a(4) =1293a(5) =2397a(6) =4091a(7) =6555a(8) =9993a(9) =14633a(10) =20727a(11) =28551a(12) =38405a(13) =50613a(14) =65523a(15) =83507a(16) =104961a(17) =130305a(18) =159983a(19) =194463a(20) =234237a(21) =279821a(22) =331755a(23) =390603a(24) =456953a(25) =531417a(26) =614631a(27) =707255a(28) =809973a(29) =923493
External references
- oeis: A250362