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A064783 Least Prime Signature but not a Jordan-Polya Number. 0
30, 60, 180, 210, 360, 420, 840, 900, 1080, 1260, 1680, 1800, 2160, 2310, 2520, 3360, 3600, 4620, 5400, 6300, 6480, 6720, 7200, 7560, 9240, 10800, 12600, 12960, 13440, 13860, 15120, 18480, 21600, 25200, 26880, 27000, 27720, 30030, 32400, 36960 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

EXAMPLE

a(1)= 30 since "30" is a least prime signature (cf. A025487) but is not the product of factorial numbers (cf. A001013)

CROSSREFS

A025487, A001013 and A000142.

Sequence in context: A069819 A143207 A108454 * A053014 A042784 A042786

Adjacent sequences:  A064780 A064781 A064782 * A064784 A064785 A064786

KEYWORD

easy,nonn

AUTHOR

Alford Arnold (Arnold1940(AT)aol.com), Oct 19 2001

EXTENSIONS

More terms from Naohiro Nomoto (n_nomoto(AT)yabumi.com) and Don Reble (djr(AT)nk.ca), Oct 21 2001

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Last modified February 16 02:30 EST 2012. Contains 205860 sequences.