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Search: id:A166545
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| A166545 |
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a(n)=13n-a(n-1), (with a(1)=13) |
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+0
1
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| 13, 13, 26, 26, 39, 39, 52, 52, 65, 65, 78, 78, 91, 91, 104, 104, 117, 117, 130, 130, 143, 143, 156, 156, 169, 169, 182, 182, 195, 195, 221, 221, 234, 234, 247, 247, 260, 260, 273, 273, 286, 286, 299, 299, 312, 312, 325, 325, 338, 338, 351, 351, 364, 364
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OFFSET
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1,1
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FORMULA
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a(n)=(13/4)-(13/4)*(-1)^n+(13/2)*n, with a(1)=13 [From Paolo P. Lava (ppl(AT)spl.at), Nov 10 2009]
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EXAMPLE
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For n=2, a(2)=13*2-13=13; n=3, a(3)=13*3-13=26; n=4, a(4)=52-26=26
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CROSSREFS
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Sequence in context: A003888 A040157 A003889 this_sequence A022347 A026907 A147249
Adjacent sequences: A166542 A166543 A166544 this_sequence A166546 A166547 A166548
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KEYWORD
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nonn,new
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AUTHOR
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Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Oct 22 2009
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