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A182232 Numbers that are palindromic in bases 2 and 5. 17

%I

%S 0,1,3,31,93,119,2709,38937,520831,682341,340134981,7609865031,

%T 17935304097,26777829859,169179279801,567897922593,286118927218753,

%U 2996750083037781,4738749440161121,6299497017331917,8829547069230943

%N Numbers that are palindromic in bases 2 and 5.

%C Intersection of A006995 and A029952. - _Michel Marcus_, Oct 08 2014

%H Ray Chandler, <a href="/A182232/b182232.txt">Table of n, a(n) for n = 1..25</a>

%e 2709 base 2 = 101010010101 and 2709 base 5 = 41314.

%t b1 = 2; b2 = 5; lst = {}; Do[d1 = IntegerDigits[n, b1]; d2 = IntegerDigits[n, b2]; If[d1 == Reverse[d1] && d2 == Reverse[d2], AppendTo[lst, n]], {n, 1000000}]; lst (* _T. D. Noe_, Apr 19 2012 *)

%Y Cf. A060792, A097856.

%K nonn,base

%O 1,3

%A _Alex Ratushnyak_, Apr 19 2012

%E Term 0 prepended by _Robert G. Wilson v_, Oct 08 2014

%E a(12)-a(16) from _Robert G. Wilson v_, Oct 11 2014

%E a(17)-a(21) and b-file from _Ray Chandler_, Oct 24 2014

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Last modified August 7 16:11 EDT 2020. Contains 336276 sequences. (Running on oeis4.)