Number of permutations of floor(i*5/2), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
A147901
Number of permutations of floor(i*5/2), 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) =74a(5) =368a(6) =1924a(7) =10496a(8) =65446a(9) =426596a(10) =3097668a(11) =23660988a(12) =200784060a(13) =1772606976a(14) =16992756584a(15) =168890555040
External references
- oeis: A147901