A059732 Central column (even terms a(2*n,n)) of A059922.
1, 2, 10, 1682, 120057399050, 2647928126185116317725365841617509110202, 255789488733925851648062359817182405921531524373868836229124342967857050792404036741709821164704443818848164235229369262826826092463167079882026
Offset: 0