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A080214 Binomial(greatest prime factor of n, smallest prime factor of n). 1
1, 1, 1, 1, 1, 3, 1, 1, 1, 10, 1, 3, 1, 21, 10, 1, 1, 3, 1, 10, 35, 55, 1, 3, 1, 78, 1, 21, 1, 10, 1, 1, 165, 136, 21, 3, 1, 171, 286, 10, 1, 21, 1, 55, 10, 253, 1, 3, 1, 10, 680, 78, 1, 3, 462, 21, 969, 406, 1, 10, 1, 465, 35, 1, 1287, 55, 1, 136, 1771, 21, 1, 3, 1, 666, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..75.

CROSSREFS

Cf. A006530, A020639, A080215, A080211.

Sequence in context: A110180 A005765 A156535 * A185620 A096066 A064085

Adjacent sequences:  A080211 A080212 A080213 * A080215 A080216 A080217

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Feb 06 2003

STATUS

approved

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Last modified May 23 10:50 EDT 2013. Contains 225587 sequences.