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A059745 Palindromic squares of sporadic type. 4
676, 69696, 94249, 698896, 5221225, 6948496, 522808225, 617323716, 942060249, 637832238736, 1086078706801, 1615108015161, 4051154511504, 5265533355625, 9420645460249, 123862676268321, 144678292876441 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

C. Ashbacher, More on palindromic squares, J. Rec. Math. 22, no. 2 (1990), 133-135. [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. 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.

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), 124-132. [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

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Last modified January 24 04:31 EST 2018. Contains 298115 sequences.