[0,1,1,3,2,3,3,5,3,5,4,5,5,7,5,7,5,7,7,9,7,9,8,9,
7,9,7,11,9,11,9,11,10,11,9,11,11,13,11,13,11,13,
11,13,11,13,13,15,12,15,13,15,13,15,13,15,13,15,
15,17,13,17,15,17,16,17,15,17,15,17,15,17,17,19,
17,19,15,19,17,19,17,19,17,19,18,19,17,21,19,21,
19,21,19,21,19,21,19,21,19,21]
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