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A117644
Number of different couples of different numbers, with digits different from zero, that produce a sum equal to 10, 100, 1000, 10000, 100000, 1000000, etc.
+0
2
4, 45, 369, 2961, 23697, 189585, 1516689
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.
AT&T Labs Research
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