Number of length 7 arrays x(i), i=1..7 with x(i) in i..i+n and no value appearing more than 3 times.
A250365
Number of length 7 arrays x(i), i=1..7 with x(i) in i..i+n and no value appearing more than 3 times.
Terms
- a(0) =128a(1) =2187a(2) =16128a(3) =76300a(4) =272760a(5) =803382a(6) =2052904a(7) =4698744a(8) =9854280a(9) =19251970a(10) =35471832a(11) =62220324a(12) =104664664a(13) =169827630a(14) =267047880a(15) =408510832a(16) =609855144a(17) =890859834a(18) =1276217080a(19) =1796395740a(20) =2488600632a(21) =3397832614a(22) =4578054504
External references
- oeis: A250365