/usr/lib/dvi2ps/fonts/a2n is in dvi2ps 5.1j-1.2+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# ASCII dvi -> NTT dvi (subfont) # virtual font font jvf * 0 $af/vf/a2n/%f.vf