Number of permutations of n (distinct) elements from [2n] without consecutive adjacent values.

A375022

Number of permutations of n (distinct) elements from [2n] without consecutive adjacent values.

Terms

    a(0) =1a(1) =2a(2) =6a(3) =48a(4) =650a(5) =11604a(6) =253890a(7) =6572176a(8) =196467642a(9) =6660672060a(10) =252504829346

External references