(Terms in A014450)/2.

Terms

a(0) =2a(1) =13a(2) =33a(3) =13a(4) =151a(5) =151a(6) =60a(7) =1208a(8) =60a(9) =251a(10) =7304a(11) =44117a(12) =78095a(13) =44117a(14) =7304a(15) =251a(16) =23920a(17) =227596a(18) =655177a(19) =655177a(20) =227596a(21) =23920a(22) =1018a(23) =1101744a(24) =4869057a(25) =7862124a(26) =4869057a(27) =1101744a(28) =1018a(29) =33159237