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81, 2401, 14641, 50625, 130321, 279841, 531441, 923521, 1500625, 2313441, 3418801, 4879681, 6765201, 9150625, 12117361, 15752961, 20151121, 25411681, 31640625, 38950081, 47458321, 57289761
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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FORMULA
| a(0)=81, a(1)=2401, a(2)=14641, a(3)=50625, a(4)=130321, a(n)=5*a(n-1)- 10*a(n-2)+10*a(n-3)-5*a(n-4)+a(n-5) [From Harvey P. Dale, Dec 08 2011]
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MATHEMATICA
| (4*Range[0, 30]+3)^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {81, 2401, 14641, 50625, 130321}, 30] (* From Harvey P. Dale, Dec 08 2011 *)
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CROSSREFS
| Sequence in context: A205978 A037211 A038676 * A128832 A085877 A123219
Adjacent sequences: A016837 A016838 A016839 * A016841 A016842 A016843
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KEYWORD
| nonn,easy
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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