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A069064 Integers which have at least two different factorizations into coprime parts whose sum are equal. 1
420, 546, 1260, 1365, 1950, 2310, 2730, 3990, 4095, 4218, 4284, 4290, 4420, 4510, 4620, 5100, 5460, 5610, 6006, 6090, 6160, 6270, 6370, 6510, 6930, 7140, 7350, 7410, 7440, 7590, 7980, 8190, 8580, 8645, 8970, 9100, 9240, 9282, 9394, 9660, 9690, 9870 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..42.

EXAMPLE

420 is in the list as 5*4*21 = 3*7*20 = 420 and 5+4+21 = 30 = 3+7+20.

For 546, it is 546= 3*7*26 = 2*13*21 and 3+7+26 = 36 = 2+13+21.

CROSSREFS

Cf. A072940.

Sequence in context: A239253 A061118 A097822 * A024410 A200521 A189982

Adjacent sequences:  A069061 A069062 A069063 * A069065 A069066 A069067

KEYWORD

easy,nonn

AUTHOR

Mike Domaratzki (domaratzki(AT)alumni.uwaterloo.ca), Aug 12 2002

STATUS

approved

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Last modified May 13 00:11 EDT 2021. Contains 343829 sequences. (Running on oeis4.)