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A072725
Integers which are exactly the concatenation of the first m numbers (A007908) divided by their sum (A000217 = m*(m+1)/2).
2
OFFSET
1,2
COMMENTS
A probability argument suggests that this sequence may be finite.
EXAMPLE
a(1) = 1/1 =1; a(2) = 12/(1+2) = 4; a(3) = 12345/(1+2+3+4+5).
CROSSREFS
KEYWORD
base,nonn,bref
AUTHOR
Henry Bottomley, Jul 06 2002
STATUS
approved