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A101203
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a(n) = sum of nonprimes <= n.
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6
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0, 1, 1, 1, 5, 5, 11, 11, 19, 28, 38, 38, 50, 50, 64, 79, 95, 95, 113, 113, 133, 154, 176, 176, 200, 225, 251, 278, 306, 306, 336, 336, 368, 401, 435, 470, 506, 506, 544, 583, 623, 623, 665, 665, 709, 754, 800, 800, 848, 897, 947, 998, 1050, 1050, 1104, 1159, 1215
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internal format)
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OFFSET
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0,5
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LINKS
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FORMULA
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MATHEMATICA
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Accumulate[Table[If[PrimeQ[n], 0, n], {n, 0, 60}]] (* Harvey P. Dale, Oct 02 2020 *)
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PROG
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(PARI) my(s=0); for(k=0, 100, if(!isprime(k), s+=k); print1(s", ")); \\ Cino Hilliard, Feb 04 2006
(Haskell)
a101203 n = a101203_list !! (n-1)
a101203_list = scanl (+) 0 $ zipWith (*) [1..] $ map (1 -) a010051_list
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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