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A029989 Squares which are palindromes in base 5. 16
0, 1, 4, 36, 676, 961, 4356, 15876, 24336, 391876, 423801, 571536, 646416, 9771876, 10732176, 14107536, 81974916, 244171876, 248094001, 264908176, 339812356, 351787536, 1061326084, 1167042244, 2181263616, 6103671876 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
Patrick De Geest, Palindromic Squares
G. J. Simmons, On palindromic squares of non-palindromic numbers, J. Rec. Math., 5 (No. 1, 1972), 11-19. [Annotated scanned copy]
MATHEMATICA
pal5Q[n_]:=Module[{idn5=IntegerDigits[n, 5]}, idn5==Reverse[idn5]]; Select[ Range[0, 80000]^2, pal5Q] (* Harvey P. Dale, May 05 2012 *)
CROSSREFS
Sequence in context: A214347 A208732 A356616 * A163887 A156630 A289545
KEYWORD
nonn,base
AUTHOR
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)