Number of permutations of floor(i*7/4), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
A147895
Number of permutations of floor(i*7/4), i=0..n-1, with all sums of two and three adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =96a(5) =456a(6) =2134a(7) =12418a(8) =81178a(9) =625138a(10) =4275412a(11) =32681806a(12) =305356674a(13) =3193552544a(14) =29875677830a(15) =301075498104
External references
- oeis: A147895