A263610 Palindromes in base 4 which are also squares.

0, 1, 121, 10201, 12321, 1002001, 1032301, 1223221, 100020001, 102030201, 103101301, 120202021, 10000200001, 10033233001, 1000002000001, 1002003002001, 1003010103001, 1021320231201, 1211130311121, 1212110112121, 1213332333121, 100000020000001, 100033323330001, 100331000133001

Offset

1,3

Links

Table of n, a(n) for n=1..24.

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, A029986, A262609, A029987.

Sequence in context: A238320 A144766 A277946 * A176923 A058412 A231661

Adjacent sequences: A263607 A263608 A263609 * A263611 A263612 A263613

Keyword

nonn,base

Author

N. J. A. Sloane, Oct 22 2015

Status

approved