The design is a variant of an old standby, the single stranded basket weave. It stands out mainly by the 17 vent and 2 grip holes almost (but not really) symmetrically arranged amidst the strands.
It's unknown what the MN/DOT had originally planned for this cover, but it now seems to be an access hole for the New York City sewer line running under the sidewalk on the west side of Park Ave.
How this accidental arrived in the heart of Manhattan is known to only a few, and they do not seem to be on Instagram. We are thus left to use our imaginations - If sewer lids could fly!