Column 3 of array in A322765.

Terms

a(0) =66a(1) =249a(2) =1075a(3) =5133a(4) =26683a(5) =149410a(6) =894124a(7) =5683643a(8) =38186471a(9) =270054693a(10) =2003233849a(11) =15539557832a(12) =125727364954