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0, 2, 20, 152, 1040, 6752, 42560, 263552, 1614080, 9815552, 59417600, 358602752, 2160005120, 12993585152, 78095728640, 469111242752, 2816814940160, 16909479575552, 101491237191680, 609084862103552, 3655058928435200, 21932552593866752
(list;
graph;
refs;
listen;
history;
text;
internal format)
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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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G.f.: 2*x/((1-4*x)*(1-6*x)).
a(n) = 10*a(n-1) - 24*a(n-2).
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MATHEMATICA
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Table[6^n - 4^n, {n, 0, 25}] (* or *) CoefficientList[Series[(2 x) / ((1 - 4 x) (1 - 6 x)), {x, 0, 30}], x]
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PROG
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(Magma) [6^n-4^n: n in [0..30]];
(PARI) vector(20, n, 6^(n-1)-4^(n-1)) \\ Derek Orr, Oct 05 2014
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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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