A263607 Base 3 numbers whose square is a palindrome in base 3.

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

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