[0,1,3,5,9,13,18,23,30,37,44,52,62,71,81,91,104,
117,131,144,159,174,190,207,224,243,262,281,301,
321,343,365,388,412,437,461,487,514,539,567,596,
625,654,684,715,748,781,814,848,883,918,955,991,
1030,1067,1105,1145,1187,1227,1269,1311,1354,1396,
1441,1486,1531,1579,1624,1673,1723,1773,1821]
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