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A118021
Numbers n such that (1+n)/n does not converge to an integer under the approximate cubing map x -> x*ceiling(x^2).
1
2, 4, 8, 16, 20, 40, 64, 72, 80, 100, 120, 128, 136, 240, 300, 376, 404, 432
OFFSET
1,1
FORMULA
A118020(n)=-1.
CROSSREFS
Sequence in context: A309263 A166156 A089473 * A326312 A134162 A244484
KEYWORD
nonn
AUTHOR
T. D. Noe, Apr 10 2006
STATUS
approved