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A029997 Squares which are palindromes in base 11. 11

%I #19 Dec 01 2014 22:21:31

%S 0,1,4,9,36,144,576,676,5184,7056,14884,17689,20736,59536,65025,77841,

%T 145924,535824,1774224,2143296,2547216,5827396,7096896,7817616,

%U 9375844,20034576,63872064,214388164,217946169,221533456,255488256,259371025

%N Squares which are palindromes in base 11.

%H Vincenzo Librandi and Chai Wah Wu, <a href="/A029997/b029997.txt">Table of n, a(n) for n = 1..129</a> First 60 terms from Vincenzo Librandi.

%H P. De Geest, <a href="http://www.worldofnumbers.com/square.htm">Palindromic Squares</a>

%t pb11Q[n_]:=Module[{idn11=IntegerDigits[n,11]},idn11==Reverse[idn11]]; Select[Range[0,17000]^2,pb11Q] (* _Harvey P. Dale_, Jul 23 2014 *)

%o (Python)

%o from gmpy2 import digits

%o A029997_list = [n for n in (x**2 for x in range(10**7)) if digits(n,11) == digits(n,11)[::-1]]

%o # _Chai Wah Wu_, Dec 01 2014

%Y Cf. A002779, A029734, A029738, A029806, A029983, A029985, A029987, A029989, A029991, A029993, A029995, A029999, A030074, A030075.

%K nonn,base

%O 1,3

%A _Patrick De Geest_

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)