A263608 Palindromes in base 3 which are also squares.

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

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: A092846 A329734 A214993 * A088760 A080486 A342233

Adjacent sequences: A263605 A263606 A263607 * A263609 A263610 A263611

Keyword

nonn,base

Author

N. J. A. Sloane, Oct 22 2015

Status

approved