Number of permutations of floor(i*8/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
A147897
Number of permutations of floor(i*8/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =74a(5) =384a(6) =1970a(7) =10998a(8) =71488a(9) =465816a(10) =3856840a(11) =30115550a(12) =249292568a(13) =2424016580a(14) =22710804768a(15) =264711365708
External references
- oeis: A147897