Number of sequences with n copies each of 1,2,...,n avoiding absolute differences between adjacent elements larger than one.
A331623
Number of sequences with n copies each of 1,2,...,n avoiding absolute differences between adjacent elements larger than one.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =92a(4) =11482a(5) =8956752a(6) =54331653686
External references
- oeis: A331623