1,1

C. Ashbacher, "More on Palindromic Squares," Journal of Recreational Mathematics, 22:2, pp. 133-135, 1990.

J. K. R. Barnett, "Tables of Square Palindromes in Bases 2 and 10," Journal of Recreational Mathematics, 23:1, pp. 13-18, 1991.

J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 26, pp 10, Ellipses, Paris 2008.

M. Keith, "Classification and Enumeration of Palindromic Squares," Journal of Recreational Mathematics, 22:2, pp. 124-132, 1990.

R. Ondrejka, "A Palindrome (151) of Palindromic Squares," Journal of Recreational Mathematics, 20:1, pp. 68-71, 1988.

W. R. Marshall, Table up to 10^40

Cf. A059745, A016106, A028818.

Sequence in context: A136922 A136921 A042308 this_sequence A016106 A092723 A006045

Adjacent sequences: A059741 A059742 A059743 this_sequence A059745 A059746 A059747

nonn

N. J. A. Sloane (njas(AT)research.att.com), Feb 21 2001