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 A228068 Difference between the number of primes with n digits (A006879) and the difference of consecutive integers nearest to Li(10^n) - Li(2) (see A228067). 5
 -1, -3, -5, -7, -21, -92, -209, -415, -947, -1403, -8484, -26675, -70708, -205919, -737729, -2162013, -4741957, -13992966, -77928220, -122866869, -374649610, -1334960954, -5317831008, -9896721062, -38014073661 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The sequence A006879(n) is always < A228067(n) for 1<=n<=25. The sequence (A228067) yields an average relative difference in absolute value, i.e. = Average(Abs(A228068(n))/ (A006879(n)) = 1.75492…x10^-2 for 1<=n<=25. Note that A190802(n)=(Li(10^n)-Li(2)) is not defined for n=0. Its value is set arbitrarily to 0. LINKS Eric Weisstein's World of Mathematics, Prime Counting Function Eric Weisstein's World of Mathematics, Logarithmic Integral FORMULA a(n) = A006879(n) - A228067(n). CROSSREFS Cf. A006880, A006879, A228067, A228066. Sequence in context: A072002 A217651 A163637 * A182233 A239282 A171015 Adjacent sequences:  A228065 A228066 A228067 * A228069 A228070 A228071 KEYWORD sign AUTHOR Vladimir Pletser, Aug 06 2013 STATUS approved

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Last modified August 10 16:56 EDT 2020. Contains 336381 sequences. (Running on oeis4.)