Number of solutions to rev(x^2)=rev(x)^2 below 10^n.

Terms

a(0) =3a(1) =9a(2) =24a(3) =63a(4) =153a(5) =362a(6) =819a(7) =1810a(8) =3872a(9) =8160a(10) =16681a(11) =33756a(12) =66864a(13) =130937a(14) =251982a(15) =480793a(16) =903981a(17) =1685563a(18) =3106008a(19) =5677863a(20) =10276935a(21) =18464658a(22) =32891187a(23) =58169964a(24) =102136772a(25) =178096364a(26) =308593319a(27) =531191384a(28) =909227946a(29) =1546356485