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10, 54, 274, 1374, 6874, 34374, 171874, 859374, 4296874, 21484374, 107421874, 537109374, 2685546874, 13427734374, 67138671874, 335693359374, 1678466796874, 8392333984374, 41961669921874, 209808349609374, 1049041748046874
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,1
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LINKS
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FORMULA
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a(n) = 5*a(n-1)+4.
a(n)= = 6*a(n-1)-5*a(n-2), n>1.
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MATHEMATICA
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CoefficientList[Series[2*(5 - 3*x)/(1 - 6*x + 5*x^2), {x, 0, 30}], x] (* Vincenzo Librandi, Jan 04 2013 *)
11*5^Range[0, 20]-1 (* or *) LinearRecurrence[{6, -5}, {10, 54}, 30] (* Harvey P. Dale, May 14 2019 *)
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PROG
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(Magma) [11*5^n-1: n in [0..30]];
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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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