

A201463


A list of 25 distinct numbers such that the sum of their reciprocals is 1 and each number is of the form p^i*q^j where p and q are distinct primes.


4



6, 10, 12, 14, 15, 18, 21, 22, 24, 26, 28, 33, 35, 36, 39, 48, 52, 56, 65, 72, 88, 91, 99, 117, 144
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OFFSET

1,1


COMMENTS

At the time Burshtein's paper appeared, this was the smallest example known of this type (it may still be the smallest).
Incidentally, this was the 200000th sequence added to the OEIS.


REFERENCES

E. J. Barbeau, Expressing one as a sum of distinct reciprocals: comments and a bibliography, Eureka (Ottawa), 3 (1977), 178181.


LINKS



CROSSREFS



KEYWORD

nonn,fini,full


AUTHOR



STATUS

approved



