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A263608 Palindromes in base 3 which are also squares. 3
0, 1, 11, 121, 10201, 11111, 112211, 122221, 1002001, 1120211, 11022011, 100020001, 101212101, 122111221, 1012112101, 1100220011, 10000200001, 10111011101, 110002200011, 111221122111, 1000002000001, 1001221221001, 1012200022101, 1101202021011, 1221221221221, 10101111110101 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..26.

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, A029984, A262607, A029985.

Sequence in context: A072051 A092846 A214993 * A088760 A080486 A082776

Adjacent sequences:  A263605 A263606 A263607 * A263609 A263610 A263611

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Oct 22 2015

STATUS

approved

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Last modified October 16 11:11 EDT 2019. Contains 328056 sequences. (Running on oeis4.)