STK_SAMPLING_VDC_RR2 generates points from the "RR2" van der Corput sequence

 CALL: X = __stk_sampling_vdc_rr2__(N, J)

    computes the first N terms of the j^th RR2-scrambled van der Corput
    sequence.

 REFERENCE 

    Ladislav Kocis and William J. Whiten, "Computational investigations of low
    discrepancy sequences", ACM Transactions on Mathematical Software, 
    23(2):266-294, 1997.
    http://dx.doi.org/10.1145/264029.264064

 SEE ALSO: stk_sampling_halton_rr2