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.

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.

William Rex Marshall (w.r.marshall(AT)actrix.co.nz), Table up to 10^40

Cf. A059744, A016106, A028818.

Sequence in context: A158393 A159208 A064963 this_sequence A028818 A014759 A058462

Adjacent sequences: A059742 A059743 A059744 this_sequence A059746 A059747 A059748

nonn

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