Triangle read by rows: T(n,k) (n >= 2, 1<=k<=n-1) is the number of permutations p of 1,...,n with max(|p(i)-p(i-1)|, i=2..n) = k.
A064482
Triangle read by rows: T(n,k) (n >= 2, 1<=k<=n-1) is the number of permutations p of 1,...,n with max(|p(i)-p(i-1)|, i=2..n) = k.
Terms
- a(0) =2a(1) =2a(2) =4a(3) =2a(4) =10a(5) =12a(6) =2a(7) =18a(8) =52a(9) =48a(10) =2a(11) =32a(12) =146a(13) =300a(14) =240a(15) =2a(16) =54a(17) =372a(18) =1204a(19) =1968a(20) =1440a(21) =2a(22) =86a(23) =954a(24) =4082a(25) =10476a(26) =14640a(27) =10080a(28) =2a(29) =134
External references
- oeis: A064482