Number of permutations of floor(i*6/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
A147936
Number of permutations of floor(i*6/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =54a(5) =260a(6) =1236a(7) =6360a(8) =31636a(9) =166080a(10) =1095490a(11) =6861468a(12) =47125320a(13) =327177196a(14) =2371069132a(15) =20747895710
External references
- oeis: A147936