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A140595 Vertical lecture of A140485. 0
1, 2, 3, 4, 5, 6, 7, 9, 8, 11, 10, 13, 14, 12, 15, 16, 18, 19, 17, 21, 23, 22, 20, 25, 26, 24, 27, 28, 29, 30, 31, 32, 33, 34, 35, 37 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

If signed, a=1-1/2+1/3-1/4+1/5-.... is a constant "not too far" from log2=0.69315.

With transform in A100597, A129891 or A130620, the corresponding polynomial family has roots along a curve which is to compare to fig 2 of P. Flajolet, X. Gourdon, B.Salvy, Gazette des Mathematiciens 1993, 55, pp. 67-78.

LINKS

Table of n, a(n) for n=0..35.

CROSSREFS

Sequence in context: A180199 A284120 A183081 * A187098 A187099 A284049

Adjacent sequences:  A140592 A140593 A140594 * A140596 A140597 A140598

KEYWORD

nonn

AUTHOR

Paul Curtz, Jul 07 2008

EXTENSIONS

The recently-edited A130620 may provide some clues about this sequence. - N. J. A. Sloane, Aug 26 2009

STATUS

approved

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Last modified January 29 16:58 EST 2020. Contains 331347 sequences. (Running on oeis4.)