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A016181
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Expansion of 1/((1-7x)(1-10x)).
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3
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1, 17, 219, 2533, 27731, 294117, 3058819, 31411733, 319882131, 3239174917, 32674224419, 328719570933, 3301036996531, 33107258975717, 331750812830019, 3322255689810133, 33255789828670931, 332790528800696517
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OFFSET
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0,2
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LINKS
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FORMULA
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(10^(n+1) - 7^(n+1))/3. - Lambert Klasen (lambert.klasen(AT)gmx.net), Feb 05 2005
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MATHEMATICA
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CoefficientList[Series[1/((1-7x)(1-10x)), {x, 0, 30}], x] (* or *) LinearRecurrence[ {17, -70}, {1, 17}, 30] (* Harvey P. Dale, Nov 16 2020 *)
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PROG
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(PARI) for(n=1, 10, print1((10^n-7^n)/3, ", "))
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CROSSREFS
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KEYWORD
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nonn,easy
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AUTHOR
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STATUS
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approved
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