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 A220654 Smallest number that can be written in binary representation in exactly n ways as concatenation of palindromes. 2

%I #13 Jul 13 2013 12:04:35

%S 0,3,9,7,17,23,34,15,33,39,55,47,66,88,72,31,65,71,103,79,133,111,152,

%T 95,130,136,215,176,277,144,273,63,129,135,199,143,443,207,284,159,

%U 261,280,239,223,588,260,264,191,258,376,272,336,627,431,529,352,532

%N Smallest number that can be written in binary representation in exactly n ways as concatenation of palindromes.

%C A215244(a(n)) = n and A215244(m) < n for m < a(n).

%H Reinhard Zumkeller, <a href="/A220654/b220654.txt">Table of n, a(n) for n = 1..10000</a>

%H <a href="/index/Bi#binary">Index entries for sequences related to binary expansion of n</a>

%H <a href="/index/Pac#palindromes">Index entries for sequences related to palindromes</a>

%o import Data.List (elemIndex)

%o import Data.Maybe (fromJust)

%o a220654 = fromJust . (`elemIndex` a215244_list)

%K nonn,base

%O 1,2

%A _Reinhard Zumkeller_, Dec 17 2012

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Last modified June 12 13:39 EDT 2024. Contains 373331 sequences. (Running on oeis4.)