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A061195 Minimum positive numerator of s_1/1 + ... + s_n/n in lowest terms, where each s_i equals 1 or -1. 1
1, 1, 1, 1, 7, 1, 11, 9, 11, 11, 23, 23, 607, 251, 59, 25, 97, 97, 2647, 2647, 1337 (list; graph; refs; listen; history; internal format)
OFFSET

1,5

EXAMPLE

1/1 - 1/2 - 1/3 + 1/4 - 1/5 - 1/6 = 1/20, so a(6)=1.

CROSSREFS

Cf. A061194.

Sequence in context: A124970 A178034 A124886 * A074283 A165949 A013600

Adjacent sequences:  A061192 A061193 A061194 * A061196 A061197 A061198

KEYWORD

nonn

AUTHOR

Greg Martin (gerg(AT)math.toronto.edu), Apr 19 2001

EXTENSIONS

More terms from Naohiro Nomoto (6284968128(AT)geocities.co.jp), Jun 24 2001

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Last modified February 16 11:30 EST 2012. Contains 205907 sequences.