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%I #13 Jul 09 2022 21:46:44
%S 3,7,15,27,31,51,55,59,63,103,111,115,119,123,127,207,219,223,231,239,
%T 243,247,251,255,411,415,435,439,443,447,463,475,479,487,495,499,503,
%U 507,511,819,823,827,831,871,879,883,887,891,895,923,927,947,951,955,959,975,987,991,999,1007,1011,1015,1019,1023
%N Numbers in the smallest subset of N containing 3 and closed under the mappings k->2k + 1, k->8k + 3, and k->16k + 3.
%H Paul K. Stockmeyer, <a href="/A353578/b353578.txt">Table of n, a(n) for n = 1..1155</a>
%H Andreas M. Hinz and Paul K. Stockmeyer, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL25/Hinz/hinz5.html">Precious Metal Sequences and Sierpinski-Type Graphs</a>, J. Integer Seq., Vol 25 (2022), Article 22.4.8.
%K nonn
%O 1,1
%A _Paul K. Stockmeyer_, May 03 2022
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