Number of permutations of floor(i*7/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
A147929
Number of permutations of floor(i*7/5), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =74a(5) =372a(6) =1764a(7) =9716a(8) =58126a(9) =350576a(10) =2659814a(11) =19804322a(12) =164438708a(13) =1469635802a(14) =13218536446a(15) =141134619260
External references
- oeis: A147929