Number of permutations of floor(i*9/8), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
A147916
Number of permutations of floor(i*9/8), i=0..n-1, with all sums of 2 through 5 adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =54a(5) =232a(6) =936a(7) =3880a(8) =23002a(9) =127008a(10) =720116a(11) =4318818a(12) =26024362a(13) =158973744a(14) =1022131470a(15) =6808137758
External references
- oeis: A147916