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A072940 Integers which have more than one coprime factorization into nonprime powers which sum to the same number. 1
30030, 43890, 53130, 60060, 72930, 82110, 90090, 102102, 103740 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

The term 30030 is in the list since 30030 = 65*22*21 = 39*55*14 and 65+22+21 = 108 = 39+55+14. The term 53130 = 15*22*161 = 6*77*115 (as well as 15*77*36 and 55*69*14) and 15+22+161 = 198 = 6+77+115 (and 15+77+36 = 55 + 69+ 14 = 138).

CROSSREFS

Cf. A069064.

Sequence in context: A067885 A285615 A258361 * A147573 A046324 A138206

Adjacent sequences:  A072937 A072938 A072939 * A072941 A072942 A072943

KEYWORD

easy,nonn

AUTHOR

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

STATUS

approved

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Last modified December 16 01:43 EST 2019. Contains 330013 sequences. (Running on oeis4.)