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Search: id:A076817
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| A076817 |
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Let u(1)=u(2)=1, u(n)=(3^floor(u(n-1)/2)+1)/u(n-2); then a(n)=10*u(n). |
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+0
1
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| 10, 10, 20, 40, 50, 25, 8, 8, 25, 50, 40, 20, 10, 10, 20, 40, 50, 25, 8, 8, 25, 50, 40, 20, 10, 10, 20, 40, 50, 25, 8, 8, 25, 50, 40, 20, 10, 10, 20, 40, 50, 25, 8, 8, 25, 50, 40, 20, 10, 10, 20, 40, 50, 25, 8, 8, 25, 50, 40, 20, 10, 10, 20, 40, 50, 25, 8, 8, 25, 50, 40, 20
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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12-periodic with period (10, 10, 20, 40, 50, 25, 8, 8, 25, 50, 40, 20)
a(n)=1/132*{161*(n mod 12)+271*[(n+1) mod 12]+161*[(n+2) mod 12]-224*[(n+3) mod 12]-136*[(n+4) mod 12]+51*[(n+5) mod 12]+238*[(n+6) mod 12]+326*[(n+7) mod 12]-59*[(n+8) mod 12]-169*[(n+9) mod 12]-59*[(n+10) mod 12]+51*[(n+11) mod 12} with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Nov 29 2006
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CROSSREFS
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Sequence in context: A097041 A040091 A022093 this_sequence A109051 A003875 A111220
Adjacent sequences: A076814 A076815 A076816 this_sequence A076818 A076819 A076820
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KEYWORD
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nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 24 2002
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