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Search: id:A089986
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| 1, 0, 1, 3, 4, 6, 9, 10, 13, 15, 16, 18, 19, 24, 25, 30, 31, 33, 36, 39, 40, 43, 46, 48, 51, 54, 55, 58, 61, 64, 66, 69, 75, 76, 81, 85, 88, 90, 93, 94, 103, 106, 108, 109, 114, 115, 118, 120, 121, 123, 124, 129
(list; graph; listen)
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OFFSET
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0,4
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REFERENCES
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M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997
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FORMULA
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a(n) = A005099(n)-2.
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CROSSREFS
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Cf. A005099.
Sequence in context: A032706 A047231 A050131 this_sequence A101448 A005122 A034706
Adjacent sequences: A089983 A089984 A089985 this_sequence A089987 A089988 A089989
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KEYWORD
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nonn
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Jan 13 2004
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