A064434(n) = 0.

Terms

a(0) =1a(1) =3a(2) =79a(3) =235a(4) =431a(5) =1503a(6) =2943a(7) =6059a(8) =6619a(9) =18911a(10) =54223a(11) =302467995a(12) =1772665631a(13) =2148845167a(14) =5145362667a(15) =129465909327a(16) =212089391807