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A016984
a(n) = (7*n)^4.
1
0, 2401, 38416, 194481, 614656, 1500625, 3111696, 5764801, 9834496, 15752961, 24010000, 35153041, 49787136, 68574961, 92236816, 121550625, 157351936, 200533921, 252047376, 312900721, 384160000
OFFSET
0,2
FORMULA
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
MATHEMATICA
(7*Range[0, 20])^4 (* or *) LinearRecurrence[{5, -10, 10, -5, 1}, {0, 2401, 38416, 194481, 614656}, 30] (* Harvey P. Dale, Mar 05 2013 *)
PROG
(Magma) [(7*n)^4: n in [0..30] ]; // Vincenzo Librandi, May 23 2011
CROSSREFS
Sequence in context: A103125 A074384 A016924 * A017152 A017248 A017356
KEYWORD
nonn,easy
STATUS
approved