"A dream" of a series :-)

[Gottfried Helms]

Am 04.06.2008 15:56 schrieb Gottfried Helms:
> A dream of a series...
> 
Well, there is a very similar series already in OEIS
http://www.research.att.com/~njas/sequences/A067911  "Product of GCD(k,n) for 1 <= k <= n"

A067911: 1, 2, 3, 8, 5, 72, 7, 128, 81, 800, 11, 41472, 13, 6272, 30375, 32768, 17, 3359232, 19, 20480000, 750141, 247808, 23, 13759414272,
maresh : 1, 2, 3, 8, 5, 72, 7, 128, 81, 800, 11, 13824, 13, 6272, 30375, 32768, 17,  419904, 19, 20480000, 750141, 247808, 23,  1528823808,
                                                  *                                   *                                           *
where at indexes 12,18,24 the series differ and the maresh series gives
  index    divide A067911 by
    12             3
    16             8
    24             9
 ...

Gottfried