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A129834
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(k-1)/2 where k runs over odd terms of A001372.
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1
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0, 0, 1, 3, 9, 23, 171, 475, 1307, 10245, 28951, 233099, 664496, 5442024, 3109434694, 218785948496
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OFFSET
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1,4
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COMMENTS
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Original definition: Suggested by A001372 as odd numbers to 130.
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LINKS
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FORMULA
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MATHEMATICA
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A001372 = {1, 1, 3, 7, 19, 47, 130, 343, 951, 2615, 7318, 20491, 57903, 163898, 466199, 1328993, 3799624, 10884049, 31241170, 89814958, 258604642, 745568756, 2152118306, 6218869389, 17988233052, 52078309200, 150899223268, 437571896993 }; Flatten[Table[If[IntegerQ[(A001372[[n]] - 1)/2], (A001372[[n]] - 1)/2, {}], { n, 1.Length[A001372]}]]
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CROSSREFS
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KEYWORD
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nonn,less
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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