This mesh uses special decreases as follows.
Instead of ssk, insert the right needle purlwise into the first stitch on the left needle and knit the second stitch through it, dropping both stitches from needle.
Instead of k2tog, pass the second stitch on the left needle over the first and off the needle, then knit the first stitch.
Use a needle size larger than usual for your yarn.
Shown with a cast-on count of 6 stitches.