Number of permutations of floor(i*7/3), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
A147928
Number of permutations of floor(i*7/3), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =74a(5) =368a(6) =2214a(7) =10892a(8) =70136a(9) =578748a(10) =3920958a(11) =33396960a(12) =341266768a(13) =2847640070a(14) =30294332328a(15) =372805397466
External references
- oeis: A147928