Number of permutations of floor(i*8/7), i=0..n-1, with all sums of two adjacent terms unique.
A147922
Number of permutations of floor(i*8/7), i=0..n-1, with all sums of two adjacent terms unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =54a(5) =232a(6) =1132a(7) =7628a(8) =50462a(9) =382076a(10) =2944618a(11) =24671640a(12) =216525368a(13) =2053251888a(14) =23564654276a(15) =271943000896
External references
- oeis: A147922