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A107255
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a(n) = n^5 - 31*n + 31, with n*a(n) + n*( n - 1 )*31 = n^6.
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0
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1, 1, 181, 931, 3001, 7621, 16621, 32551, 58801, 99721, 160741, 248491, 370921, 537421, 758941, 1048111, 1419361, 1889041, 2475541, 3199411, 4083481, 5152981, 6435661, 7961911, 9764881, 11880601, 14348101, 17209531, 20510281, 24299101
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OFFSET
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1,3
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LINKS
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EXAMPLE
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a(2)=1, 1 + 63 = 2^6; a(3) = 181, 181 + 243 + 305 = 3^6; a(4) = 931, 931 + 993 + 1055 + 1117 = 4^6
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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Andras Erszegi (erszegi.andras(AT)chello.hu), May 14 2005
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STATUS
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approved
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