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A073162
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n is such that partial sum of Pi(k) from 1 to n is divisible by n.
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2
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OFFSET
| 1,2
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COMMENTS
| a(11) > 10^12. - Donovan Johnson, Mar 19 2011
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FORMULA
| Solutions to Mod[A046992(x), x]=0
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EXAMPLE
| a(3) = 17 because 0+1+2+2+3+3+4+4+4+4+5+5+6+6+6+6+7 = 68 = 4*17.
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MATHEMATICA
| s = 0; Do[s = s + PrimePi[n]; If[ IntegerQ[s/n], Print[{n, s, s/n}]], {n, 1, 10^8}]
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CROSSREFS
| Cf. A046992, A000720, A073163, A073164, A073224.
Sequence in context: A106895 A106896 A097938 * A146186 A179783 A196781
Adjacent sequences: A073159 A073160 A073161 * A073163 A073164 A073165
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KEYWORD
| nonn
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AUTHOR
| Labos E. (labos(AT)ana.sote.hu), Jul 18 2002
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EXTENSIONS
| Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Jul 20 2002
a(10) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 15 2009
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