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A043056 a(n)=(s(n)+3)/6, where s(n)=n-th base 6 palindrome that starts with 3. 0

%I

%S 1,4,19,20,21,22,23,24,109,116,123,130,137,144,649,655,661,667,673,

%T 679,686,692,698,704,710,716,723,729,735,741,747,753,760,766,772,778,

%U 784,790,797,803,809,815,821,827,834,840,846,852

%N a(n)=(s(n)+3)/6, where s(n)=n-th base 6 palindrome that starts with 3.

%K nonn,base

%O 1,2

%A _Clark Kimberling_

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Last modified January 26 02:39 EST 2022. Contains 350572 sequences. (Running on oeis4.)