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A072724
Integers which are exactly the concatenation of the first m even numbers (
A019520
) divided by their sum (
A002378
= m^2+m).
+0
3
1, 4, 8227, 3427918353
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.
AT&T Labs Research
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