Number of permutations of floor(i*9/4), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
A147950
Number of permutations of floor(i*9/4), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =96a(5) =376a(6) =1924a(7) =10496a(8) =84546a(9) =512596a(10) =3408402a(11) =27126934a(12) =264217136a(13) =2142601474a(14) =18260309986a(15) =185609885490
External references
- oeis: A147950