Least present k-mers in the human genome What are the least present k-mers in the human genome at different sizes?

Starting with k=4 and going up in size until k=10, what are the k-mers least seen (or not at all) in the human genome? I am only interested in the reference human genome, so I am discounting SNPs/Indels in the population.

If this is not pre-calculated somewhere, what tool is recommended to use that starts with the GRCh38 reference as input?
You can use the Jellyfish software to calculate the k-mer profiles up to length 31.

From the instructions in the user guide: 

The basic command to count all k-mers is as follows:

jellyfish count -m 21 -s 100M -t 10 -C reads.fasta


To compute the histogram of the k-mer occurrences, use the histo subcommand (see section 3.1):

jellyfish histo mer_counts.jf


To query the counts of a particular k-mer, use the query subcommand (see section 3.3):

jellyfish query mer_counts.jf AACGTTG


To output all the counts for all the k-mers in the le, use the dump subcommand (see section 3.2):

jellyfish dump mer_counts.jf &gt; mer_counts_dumps.fa