(Terms in A014472)/2.

Terms

a(0) =13a(1) =151a(2) =60a(3) =44117a(4) =7304a(5) =251a(6) =655177a(7) =227596a(8) =23920a(9) =4869057a(10) =1101744a(11) =1018a(12) =81256143a(13) =33159237a(14) =752810754a(15) =22766725a(16) =739863a(17) =4089a(18) =13985588046a(19) =99205393a(20) =2268657a(21) =51388499464a(22) =424045456a(23) =16376