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A114688
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Expansion of (-1-3*x+x^2)/((1-x)*(x+1)*(x^2+2*x-1)); a Pellian-related sequence.
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4
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1, 5, 11, 30, 71, 175, 421, 1020, 2461, 5945, 14351, 34650, 83651, 201955, 487561, 1177080, 2841721, 6860525, 16562771, 39986070, 96534911, 233055895, 562646701, 1358349300, 3279345301
(list; graph; refs; listen; history; internal format)
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