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A127902
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Series reversion of x/(1+x+x^4).
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0
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1, 1, 1, 1, 2, 6, 16, 36, 75, 163, 391, 991, 2498, 6150, 15016, 37116, 93481, 238137, 607921, 1550401, 3959335, 10155615, 26182267, 67753907, 175713561, 456422121, 1187771521
(list; graph; refs; listen; history; internal format)
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