Number of permutations of floor(i*5/3), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
A147926
Number of permutations of floor(i*5/3), 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) =96a(5) =376a(6) =2062a(7) =12860a(8) =69210a(9) =499610a(10) =3976470a(11) =29600486a(12) =270810736a(13) =2683748296a(14) =24357907464a(15) =272243917696
External references
- oeis: A147926