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Search: id:A100206
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| 0, 7, 20, 46, 98, 202, 410, 826, 1658, 3322, 6650, 13306, 26618, 53242, 106490, 212986, 425978, 851962, 1703930, 3407866, 6815738, 13631482, 27262970, 54525946, 109051898, 218103802, 436207610, 872415226, 1744830458, 3489660922
(list; graph; listen)
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OFFSET
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0,2
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LINKS
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Eric Weisstein's World of Mathematics, ClarksTriangle
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FORMULA
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a(0)=0; for n>0, a(n) = 13*2^(n-1) - 6. - Max Alekseyev (maxale(AT)gmail.com), May 12 2005
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EXAMPLE
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a(0)=0
a(1)=6+1
a(2)=12+7+1
a(3)=18+19+8+1
a(4)=24+37+27+9+1
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PROGRAM
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(PARI) {a(n) = if(n, 13*2^(n-1)-6, 0)} (Alekseyev)
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CROSSREFS
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Sequence in context: A143058 A011934 A159222 this_sequence A007044 A047862 A048755
Adjacent sequences: A100203 A100204 A100205 this_sequence A100207 A100208 A100209
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KEYWORD
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nonn
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AUTHOR
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Jorge Coveiro (jorgecoveiro(AT)yahoo.com), Dec 28 2004
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EXTENSIONS
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More terms from Max Alekseyev (maxale(AT)gmail.com), May 12 2005
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