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A097071
Number of Shubnikov compounds.
0
1, 2, 3, 5, 6, 10, 12, 18, 23, 30
OFFSET
1,2
COMMENTS
The definition is not clear to me.
According to the reference, this is meant to be the number of partitions of n into terms of A018261. So the correct value for a(9) is 22. - Andrey Zabolotskiy, Jul 11 2017
LINKS
N. L. Smirnova and V. S. Urusov, Fundamental law of crystal symmetry by Shubnikov, its applications and restrictions, Computers and Mathematics with Applications, 16 (1988), 563-567.
CROSSREFS
Sequence in context: A088314 A304405 A347446 * A105420 A058641 A212253
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 15 2004
STATUS
approved