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A016880
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a(n) = (5*n+2)^8.
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1
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256, 5764801, 429981696, 6975757441, 54875873536, 282429536481, 1099511627776, 3512479453921, 9682651996416, 23811286661761, 53459728531456, 111429157112001, 218340105584896, 406067677556641, 722204136308736, 1235736291547681, 2044140858654976, 3282116715437121
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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(0)=256, a(1)=5764801, a(2)=429981696, a(3)=6975757441, a(4)=54875873536, a(5)=282429536481, a(6)=1099511627776, a(7)=3512479453921, a(8)=9682651996416; for n>8, a(n) = 9*a(n-1) - 36*a(n-2) + 84*a(n-3) - 126*a(n-4) + 126*a(n-5) - 84*a(n-6) + 36*a(n-7) - 9*a(n-8) + a(n-9). - Harvey P. Dale, Feb 11 2015
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MAPLE
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MATHEMATICA
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(5*Range[0, 20]+2)^8 (* or *) LinearRecurrence[{9, -36, 84, -126, 126, -84, 36, -9, 1}, {256, 5764801, 429981696, 6975757441, 54875873536, 282429536481, 1099511627776, 3512479453921, 9682651996416}, 20] (* Harvey P. Dale, Feb 11 2015 *)
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PROG
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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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EXTENSIONS
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STATUS
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approved
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