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Search: id:A123890
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| A123890 |
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G.f.: x/((1-x^2)^5-1+x). |
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+0 1
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| 1, 5, 25, 115, 525, 2385, 10825, 49120, 222875, 1011251, 4588335, 20818575, 94459755, 428590575, 1944636420, 8823364350, 40034094615, 181645987625, 824179118751, 3739533301365, 16967318139775, 76985511735170, 349304997307275, 1584895370489480
(list; graph; listen)
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