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A054969 Palindromic hexagonal numbers. 5

%I #16 Mar 02 2022 15:57:00

%S 0,1,6,66,3003,5995,15051,66066,617716,828828,1269621,1680861,5073705,

%T 5676765,1264114621,5289009825,6172882716,13953435931,1313207023131,

%U 5250178710525,6874200024786,61728399382716,602224464422206,636188414881636,1250444114440521

%N Palindromic hexagonal numbers.

%H Robert Price, <a href="/A054969/b054969.txt">Table of n, a(n) for n = 1..33</a>

%t Select[PolygonalNumber[6, Range[0, 10^6]], PalindromeQ] (* _Robert Price_, Apr 27 2019 *)

%Y Intersection of A000384 and A002113.

%Y Cf. A054970, A082721.

%K nonn,base

%O 1,3

%A _Jeff Heleen_, May 26 2000

%E Added a(1)=0 by _Robert Price_, Apr 27 2019

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Last modified April 16 14:05 EDT 2024. Contains 371740 sequences. (Running on oeis4.)