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A263609 Base 4 numbers whose square is a palindrome in base 4. 0
0, 1, 11, 101, 111, 1001, 1013, 1103, 10001, 10101, 10121, 10331, 100001, 100133, 1000001, 1001001, 1001201, 1010301, 1100211, 1100323, 1101211, 10000001, 10001333, 10013201, 10031113, 100000001, 100010001, 100012001, 100103001, 100301113, 100332101, 101002101, 103231203, 110002011 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..34.

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, A029986, A263610, A029987.

Sequence in context: A265528 A099821 A193415 * A264406 A057148 A076289

Adjacent sequences:  A263606 A263607 A263608 * A263610 A263611 A263612

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Oct 22 2015

STATUS

approved

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Last modified August 23 14:32 EDT 2019. Contains 326247 sequences. (Running on oeis4.)