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A057230 Numbers n such that n=p+q=r+s with p*q=r*s=primorial number(A002110) (p*q)<(r*s). 0
31, 107, 391, 467, 34049, 67973, 176413 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

E.g. 31=30+1=21+10, 30=210=primorial number

CROSSREFS

Cf. A002110.

Sequence in context: A075936 A103069 A141877 * A142177 A063397 A044282

Adjacent sequences:  A057227 A057228 A057229 * A057231 A057232 A057233

KEYWORD

nonn

AUTHOR

Naohiro Nomoto (6284968128(AT)geocities.co.jp), Sep 19 2000

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Last modified February 17 09:30 EST 2012. Contains 206009 sequences.