Number of length n arrays x(i), i=1..n with x(i) in i..i+6 and no value appearing more than 2 times.
A250349
Number of length n arrays x(i), i=1..n with x(i) in i..i+6 and no value appearing more than 2 times.
Terms
- a(0) =7a(1) =49a(2) =338a(3) =2287a(4) =15186a(5) =99344a(6) =644040a(7) =4164930a(8) =26882466a(9) =173276640a(10) =1115910270a(11) =7182799173a(12) =46220503936a(13) =297376327082
External references
- oeis: A250349