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A130884
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3n^3 + 2n^2 + n + 1.
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1
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1, 7, 35, 103, 229, 431, 727, 1135, 1673, 2359, 3211, 4247, 5485, 6943, 8639, 10591, 12817, 15335, 18163, 21319, 24821, 28687, 32935, 37583, 42649, 48151, 54107, 60535, 67453, 74879, 82831, 91327, 100385, 110023, 120259, 131111
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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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G.f.: (1+13*x^2+x^3+3*x)/(-1+x)^4. - R. J. Mathar, Nov 14 2007
a(0)=1, a(1)=7, a(2)=35, a(3)=103, a(n)=4*a(n-1)-6*a(n-2)+4*a(n-3)- a(n-4) [Harvey P. Dale, Jan 17 2012]
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MATHEMATICA
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Table[3n^3+2n^2+n+1, {n, 0, 40}] (* or *) LinearRecurrence[{4, -6, 4, -1}, {1, 7, 35, 103}, 40] (* Harvey P. Dale, Jan 17 2012 *)
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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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