Number of permutations of floor(i*3/2), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
A147900
Number of permutations of floor(i*3/2), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =74a(5) =368a(6) =1776a(7) =9208a(8) =53466a(9) =314212a(10) =2134376a(11) =14852630a(12) =117199526a(13) =945570742a(14) =8407963796a(15) =76231574308
External references
- oeis: A147900