Number of permutations of floor(i*7/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
A147938
Number of permutations of floor(i*7/5), i=0..n-1, with all sums of 2 through 4 adjacent terms respectively unique.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =74a(5) =372a(6) =1764a(7) =9076a(8) =51988a(9) =292392a(10) =2059488a(11) =14021462a(12) =105081158a(13) =851532252a(14) =6805717470a(15) =64732937542
External references
- oeis: A147938