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A290043 Prime factors of A290042. 1
2, 3, 5, 17, 19, 23, 7433, 7451, 7457, 7459, 3080515841187937, 3080515841187947, 3080515841187989, 3080515841188039, 3080515841188057 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

FORMULA

Product_{k=n(n-1)/2 + 1..n(n+1)/2} a(k) = A290042(n) for n > 0.

EXAMPLE

A290042(2) = 15 = 3*5, so 3 and 5 are members.

CROSSREFS

Cf. A290042.

Sequence in context: A129943 A129673 A215372 * A058501 A215356 A249410

Adjacent sequences:  A290040 A290041 A290042 * A290044 A290045 A290046

KEYWORD

nonn

AUTHOR

Jonathan Sondow, Aug 20 2017

STATUS

approved

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Last modified March 26 23:02 EDT 2019. Contains 321565 sequences. (Running on oeis4.)