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Search: id:A134267
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| 3, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3, 2, 5
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Except for initial term, periodic sequence with period 2 3 2 5.
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FORMULA
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a(n)=(1/4)*{-(n mod 4)+3*[(n+1) mod 4]+5*[(n+2) mod 4]+[(n+3) mod 4]}-2*[C(2*n,n) mod 2], with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Feb 15 2008
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CROSSREFS
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Cf. A090964.
Sequence in context: A066919 A084117 A116895 this_sequence A092962 A112924 A054263
Adjacent sequences: A134264 A134265 A134266 this_sequence A134268 A134269 A134270
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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 15 2008
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