Number of palindromes < 10^n whose squares are also palindromes.

Terms

a(0) =1a(1) =4a(2) =6a(3) =11a(4) =14a(5) =22a(6) =27a(7) =40a(8) =49a(9) =71a(10) =87a(11) =124a(12) =151a(13) =211a(14) =254a(15) =347a(16) =412a(17) =550a(18) =644a(19) =841a(20) =972a(21) =1244a(22) =1421a(23) =1786a(24) =2019a(25) =2497a(26) =2797a(27) =3410a(28) =3789a(29) =4561