Central terms in rows of triangle A219120.

Terms

a(0) =1a(1) =1a(2) =-2a(3) =-19a(4) =-74a(5) =-68a(6) =1856a(7) =22717a(8) =182806a(9) =1095506a(10) =2706452a(11) =-62235754a(12) =-1630900556a(13) =-28213310474a(14) =-422792067164