Number of permutations of floor(i*8/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
A147905
Number of permutations of floor(i*8/5), 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) =384a(6) =1970a(7) =10282a(8) =65472a(9) =408096a(10) =3135626a(11) =22226326a(12) =167840010a(13) =1477742556a(14) =12643496462a(15) =132500787090
External references
- oeis: A147905