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A029988 Numbers n such that n^2 is palindromic in base 5. 4
0, 1, 2, 6, 26, 31, 66, 126, 156, 626, 651, 756, 804, 3126, 3276, 3756, 9054, 15626, 15751, 16276, 18434, 18756, 32578, 34162, 46704, 78126, 78876, 81276, 93756, 390626, 391251, 393876, 406276, 468756, 487981, 1166454, 1953126, 1956876 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..38.

P. De Geest, Palindromic Squares

G. J. Simmons, On palindromic squares of non-palindromic numbers, J. Rec. Math., 5 (No. 1, 1972), 11-19. [Annotated scanned copy]

CROSSREFS

Cf. A002778, A003166, A263611, A263612, A029989.

Sequence in context: A109286 A009466 A032479 * A050573 A223094 A213339

Adjacent sequences:  A029985 A029986 A029987 * A029989 A029990 A029991

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified April 28 00:46 EDT 2017. Contains 285556 sequences.