

A130719


a(n) = nth digit after the decimal point of the decimal representation of the nth harmonic number.


0



0, 0, 3, 3, 3, 0, 1, 4, 3, 9, 7, 0, 7, 2, 3, 2, 3, 0, 4, 8, 1, 8, 4, 3, 6, 1, 1, 6, 9, 4, 4, 0, 9, 1, 3, 7, 1, 4, 2, 6, 0, 6, 0, 2, 3, 5, 2, 9, 4, 5, 3, 6, 7, 8, 4, 3, 5, 3, 3, 5, 0, 5, 2, 1, 0, 2, 0, 8, 8, 7, 0, 0, 1, 7, 9, 9, 8, 5, 1, 0
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OFFSET

1,3


LINKS

Table of n, a(n) for n=1..80.
Eric Weisstein's World of Mathematics, Harmonic Series.


EXAMPLE

a(7) = 1 because the 7th harmonic number is 1/1+1/2+1/3+1/4+1/5+1/6+1/7 = 2.592857143... and 1 is the 7th digit after the decimal point.


MATHEMATICA

Table[Last[RealDigits[HarmonicNumber[n], 10, n+1][[1]]], {n, 80}] (* Harvey P. Dale, Nov 28 2013 *)


CROSSREFS

Sequence in context: A002073 A247093 A329273 * A143606 A126660 A202698
Adjacent sequences: A130716 A130717 A130718 * A130720 A130721 A130722


KEYWORD

base,nonn


AUTHOR

Stephen Casey (hexomino(AT)gmail.com), Jul 03 2007


STATUS

approved



