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G.f. A(x) satisfies: A(x) = x + x^2 * exp(2 * Sum_{k>=1} A(x^k) / k).
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1, 1, 2, 5, 12, 32, 84, 234, 652, 1872, 5416, 15922, 47188, 141283, 425910, 1293105, 3948080, 12118619, 37367694, 115708111, 359623780, 1121543440, 3508533500, 11006973980, 34620982004, 109157354769, 344928572562, 1092190467567, 3464955417200, 11012117992012
G.f. A(x) satisfies: A(x) = x + x^2 * exp(3 * Sum_{k>=1} A(x^k) / k).
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1, 1, 3, 9, 28, 93, 315, 1109, 3969, 14505, 53726, 201588, 764001, 2921730, 11257881, 43669590, 170383933, 668236581, 2632898016, 10416893159, 41368099791, 164841324837, 658883345595, 2641064296638, 10613953319448, 42757746556377, 172628891937513, 698398635475974
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