Number of permutations of 1..n with the sequence of sums of 3 adjacent elements having exactly 1 maximum.
A179716
Number of permutations of 1..n with the sequence of sums of 3 adjacent elements having exactly 1 maximum.
Terms
- a(0) =0a(1) =6a(2) =24a(3) =90a(4) =360a(5) =1680a(6) =7840a(7) =36960a(8) =184800a(9) =924000a(10) =4643100a(11) =24144120a(12) =125621496a(13) =655350696a(14) =3495203712
External references
- oeis: A179716