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A141086
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a(n) = prime(2*n^2) - 2*n^2.
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0
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1, 11, 43, 99, 179, 287, 423, 591, 791, 1023, 1289, 1589, 1935, 2301, 2731, 3159, 3641, 4165, 4749, 5333, 5975, 6653, 7403, 8159, 8927, 9809, 10739, 11609, 12659, 13601, 14697, 15815, 17033, 18167, 19391, 20635, 22011, 23379, 24809, 26243, 27831
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OFFSET
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1,2
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LINKS
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FORMULA
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EXAMPLE
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a(1) = prime(2*1^2) - 2*1^2 = prime(2) - 2 = 3 - 2 = 1.
a(2) = prime(2*2^2) - 2*2^2 = prime(8) - 8 = 19 - 8 = 11.
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MAPLE
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a:=proc(n) options operator, arrow: ithprime(2*n^2)-2*n^2 end proc: seq(a(n), n=1..45); # Emeric Deutsch, Aug 07 2008
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MATHEMATICA
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PROG
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(PARI) a(n) = my(m = 2*n^2); prime(m) - m; \\ Michel Marcus, Mar 08 2019
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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