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A069078
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a(n) = n*(4*n^4 + 1).
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0
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0, 5, 130, 975, 4100, 12505, 31110, 67235, 131080, 236205, 400010, 644215, 995340, 1485185, 2151310, 3037515, 4194320, 5679445, 7558290, 9904415, 12800020, 16336425, 20614550, 25745395, 31850520, 39062525, 47525530, 57395655, 68841500, 82044625, 97200030, 114516635
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graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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REFERENCES
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Konrad Knopp, Theory and application of infinite series, Dover, p. 268
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LINKS
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FORMULA
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MATHEMATICA
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a[n_] := n*(4*n^4 + 1); Array[a, 40, 0] (* Amiram Eldar, Mar 08 2022 *)
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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