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A127940
a(n) = denominator of b(n), where b(1)=1, b(n+1) = sum{k|n} 1/b(k).
+0
2
1, 1, 1, 2, 3, 8, 22, 71, 93, 638, 9144, 26821, 2373690, 11013191, 950468551, 23819080360, 4860600739719, 18887557655957, 23748158395676, 102452785866447, 1153981434332852712, 722919835385951370578
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
AT&T Labs Research
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