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A113458 Least k such that k, k+n and k+2n have the same prime signature. 2
33, 3, 155, 3, 77, 5, 51, 3, 77, 3, 35, 5, 50, 3, 187, 6, 21, 5, 39, 3, 145, 33, 39, 5, 69, 39, 91, 3, 33, 7, 15, 12, 221, 3, 28, 7, 21, 3, 55, 3, 33, 5, 91, 66, 209, 69, 35, 5, 50, 3, 115, 39, 141, 5, 51, 6, 145, 85, 15, 7, 21, 93, 95, 3, 57, 5, 51, 3, 65, 15, 35, 7, 69, 55, 287, 6 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Third row of A113456.

EXAMPLE

a(4) = 3 because 3, 7 and 11 have the same prime signature.

CROSSREFS

Cf. A052214 A113456 A113467.

Sequence in context: A032445 A135088 A113467 * A120584 A123173 A147021

Adjacent sequences:  A113455 A113456 A113457 * A113459 A113460 A113461

KEYWORD

easy,nonn

AUTHOR

David Wasserman (dwasserm(AT)earthlink.net), Jan 08 2006

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Last modified February 15 02:50 EST 2012. Contains 205694 sequences.