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A029995
Squares which are palindromes in base 9.
11
0, 1, 4, 100, 400, 6724, 8281, 10000, 26896, 532900, 672400, 2131600, 43059844, 44129449, 45212176, 53290000, 54479161, 55681444, 172239376, 186104164, 186595600, 203946961, 2921402500, 3486902500, 3583219600
OFFSET
1,3
LINKS
P. De Geest, Palindromic Squares
MATHEMATICA
pal9Q[n_]:=Module[{idn9=IntegerDigits[n, 9]}, idn9==Reverse[idn9]]; Select[ Range[0, 60000]^2, pal9Q] (* Harvey P. Dale, Nov 12 2011 *)
KEYWORD
nonn,base
STATUS
approved