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 A073163 Partial sums of Pi(k) arising in A073162. 2
 0, 3, 68, 259, 5500628, 1180641920, 19503263760, 46464766631, 863653341852, 306757978180563 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..10. FORMULA Values of s(n) = A046992(n) such that s(n)/n is integer. EXAMPLE Sum of first 17 values of Pi(n) equals 0+1+2+2+3+3+4+4+4+4+5+5+6+6+6+6+7 = 68 = 4*17. To continue, see A073224. MATHEMATICA s = 0; Do[s = s + PrimePi[n]; If[ IntegerQ[s/n], Print[{n, s, s/n}]], {n, 1, 10^8}] CROSSREFS Cf. A046992, A000720, A073162, A073164 & A073224. Sequence in context: A091872 A079320 A283882 * A324082 A279491 A264700 Adjacent sequences: A073160 A073161 A073162 * A073164 A073165 A073166 KEYWORD nonn AUTHOR Labos Elemer, Jul 18 2002 EXTENSIONS Edited and extended by Robert G. Wilson v, Jul 20 2002 a(10) from Donovan Johnson, Dec 15 2009 STATUS approved

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Last modified February 28 00:18 EST 2024. Contains 370379 sequences. (Running on oeis4.)