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A069475
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First differences of A069474, successive differences of (n+1)^6-n^6.
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3
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1560, 3360, 5880, 9120, 13080, 17760, 23160, 29280, 36120, 43680, 51960, 60960, 70680, 81120, 92280, 104160, 116760, 130080, 144120, 158880, 174360, 190560, 207480, 225120, 243480, 262560, 282360, 302880, 324120, 346080, 368760, 392160, 416280
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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(n) = 360*n^2 + 1440*n + 1560 = 120*A056107(n+2).
G.f.: 120*(13 - 11*x + 4*x^2))/(1 - x)^3. - Bruno Berselli, Feb 25 2015
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MATHEMATICA
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Table[360 n^2 + 1440 n + 1560, {n, 0, 40}] (* Bruno Berselli, Feb 25 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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Eli McGowan (ejmcgowa(AT)mail.lakeheadu.ca), Mar 26 2002
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EXTENSIONS
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Offset changed from 1 to 0 and added a(0)=1560 by Bruno Berselli, Feb 25 2015
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STATUS
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approved
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