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A043250
Numbers n such that 4 and 9 occur juxtaposed in the base 10 representation of n but not of n-1.
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49, 94, 149, 194, 249, 294, 349, 394, 449, 490, 549, 594, 649, 694, 749, 794, 849, 894, 940, 994, 1049, 1094, 1149, 1194, 1249, 1294, 1349, 1394, 1449, 1490, 1549, 1594, 1649, 1694, 1749, 1794, 1849, 1894, 1940, 1994, 2049
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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 18 21:37 EST 2009. Contains 171024 sequences.
AT&T Labs Research
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