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A023380
a(n+1) = a(n) converted to base 7 from base 5 (written in base 10).
+0
1
5, 7, 9, 11, 15, 21, 29, 53, 101, 197, 471, 1205, 3927, 19651, 137593, 1243889, 17815781, 446377513, 21886017793, 2290044969551, 697988552388639, 733856563397342627, 3102723977467356326765, 72303720506476062470266309
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Maintained by
N. J. A. Sloane
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.
AT&T Labs Research
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