Coefficients arising in the enumeration of configurations of linear chains.

A038749

Coefficients arising in the enumeration of configurations of linear chains.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =2a(4) =16a(5) =96a(6) =510a(7) =2558a(8) =12282a(9) =57498a(10) =263421a(11) =1192480a(12) =5330078a(13) =23657520a(14) =104106655a(15) =455993276a(16) =1984733843a(17) =8609546380a(18) =37164674383

External references