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Search: id:A161204
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| 0, 0, 0, 0, 1, 1, 2, 2, 3, 4, 6, 6, 8, 9, 10, 11, 14, 15, 18, 19, 21, 23, 26, 26
(list; graph; listen)
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OFFSET
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1,7
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FORMULA
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a(n) = A161203(n)/2.
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CROSSREFS
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Cf. A000005, A000720, A018253, A160811, A160812, A160813, A161203.
Sequence in context: A087724 A152047 A101344 this_sequence A152048 A046934 A093594
Adjacent sequences: A161201 A161202 A161203 this_sequence A161205 A161206 A161207
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KEYWORD
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easy,more,nonn
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AUTHOR
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Omar E. Pol (info(AT)polprimos.com), Jun 19 2009
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