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A263611 Base 4 numbers whose square is a palindrome in base 5. 2
0, 1, 2, 11, 101, 111, 231, 1001, 1111, 10001, 10101, 11011, 11204, 100001, 101101, 110011, 242204, 1000001, 1001001, 1010101, 1042214, 1100011, 2020303, 2043122, 2443304, 10000001, 10011001, 10100101, 11000011, 100000001, 100010001, 100101001, 101000101, 110000011, 111103411 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..35.

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, A029988, A263612, A029989.

Sequence in context: A097463 A263607 A083394 * A256495 A087988 A072382

Adjacent sequences:  A263608 A263609 A263610 * A263612 A263613 A263614

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Oct 23 2015

STATUS

approved

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Last modified July 20 23:29 EDT 2019. Contains 325189 sequences. (Running on oeis4.)