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A016984
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a(n) = (7*n)^4.
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1
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0, 2401, 38416, 194481, 614656, 1500625, 3111696, 5764801, 9834496, 15752961, 24010000, 35153041, 49787136, 68574961, 92236816, 121550625, 157351936, 200533921, 252047376, 312900721, 384160000
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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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a(n) = 5*a(n-1) - 10*a(n-2) + 10*a(n-3) - 5*a(n-4) + a(n-5); a(0)=0, a(1)=2401, a(2)=38416, a(3)=194481, a(4)=614656. - Harvey P. Dale, Mar 05 2013
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MATHEMATICA
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(7*Range[0, 20])^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {0, 2401, 38416, 194481, 614656}, 30] (* Harvey P. Dale, Mar 05 2013 *)
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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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STATUS
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approved
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