A064783 - OEIS

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A064783

Least prime signature numbers that are not a Jordan-Polya number.

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; text; internal format)

OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

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

CROSSREFS

Cf. A000142, A001013, A025487.

Sequence in context: A359410 A108454 A235483 * A228877 A258879 A053014

Adjacent sequences: A064780 A064781 A064782 * A064784 A064785 A064786

KEYWORD