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Search: id:A054121
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A054121 T(n,n-3), array T as in A054120. +0
1
1, 9, 39, 114, 261, 507, 879, 1404, 2109, 3021, 4167, 5574, 7269, 9279, 11631, 14352, 17469, 21009, 24999, 29466, 34437, 39939, 45999, 52644, 59901, 67797, 76359, 85614, 95589, 106311, 117807, 130104, 143229, 157209 (list; graph; listen)
OFFSET

3,2

FORMULA

For n>3, a(n) = 3/2 * (3n^3-30n^2+107n-134).

CROSSREFS

Adjacent sequences: A054118 A054119 A054120 this_sequence A054122 A054123 A054124

Sequence in context: A071238 A050854 A023163 this_sequence A139594 A034263 A060929

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.


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