Number of permutations of floor(i*9/4), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
A147932
Number of permutations of floor(i*9/4), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =16a(4) =96a(5) =376a(6) =1924a(7) =10912a(8) =90032a(9) =563836a(10) =3920958a(11) =33396960a(12) =370390258a(13) =3235719046a(14) =30075123118a(15) =343158668698
External references
- oeis: A147932