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A263607 Base 3 numbers whose square is a palindrome in base 3. 4
0, 1, 2, 11, 101, 102, 202, 211, 1001, 1021, 2002, 10001, 10022, 11012, 12201, 20002, 100001, 100201, 200002, 201102, 1000001, 1000222, 1002201, 1011221, 1101211, 1211201, 1212022, 2000002, 10000001, 10002001, 10200102, 10201121, 11011211, 12212101, 20000002, 20011002, 100000001, 100002222, 100022001 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..288

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, A029984, A263608, A029985.

Sequence in context: A236174 A003021 A097463 * A083394 A263611 A256495

Adjacent sequences:  A263604 A263605 A263606 * A263608 A263609 A263610

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Oct 22 2015

STATUS

approved

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Last modified January 20 23:20 EST 2019. Contains 319343 sequences. (Running on oeis4.)