

A059745


Palindromic squares of sporadic type.


4



676, 69696, 94249, 698896, 5221225, 6948496, 522808225, 617323716, 942060249, 637832238736, 1086078706801, 1615108015161, 4051154511504, 5265533355625, 9420645460249, 123862676268321, 144678292876441
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OFFSET

1,1


REFERENCES

C. Ashbacher, More on palindromic squares, J. Rec. Math. 22, no. 2 (1990), 133135. [A scan of the first page of this article is included with the last page of the Keith (1990) scan]
J. K. R. Barnett, "Tables of Square Palindromes in Bases 2 and 10," Journal of Recreational Mathematics, 23:1, pp. 1318, 1991.
M. Keith, "Classification and Enumeration of Palindromic Squares," Journal of Recreational Mathematics, 22:2, pp. 124132, 1990.
R. Ondrejka, "A Palindrome (151) of Palindromic Squares," Journal of Recreational Mathematics, 20:1, pp. 6871, 1988.


LINKS

Table of n, a(n) for n=1..17.
M. Keith, Classification and enumeration of palindromic squares, J. Rec. Math., 22 (No. 2, 1990), 124132. [Annotated scanned copy] (Has many more terms)
William Rex Marshall, Table up to 10^40


CROSSREFS

Cf. A059744, A016106, A028818.
Sequence in context: A239608 A238252 A264338 * A028818 A203541 A014759
Adjacent sequences: A059742 A059743 A059744 * A059746 A059747 A059748


KEYWORD

nonn,base,more


AUTHOR

N. J. A. Sloane, Feb 21 2001


STATUS

approved



