Polynumbers

Definition: Ṕ ≣ [ -N ... -1 0 1 ... N ]  or
<blockquote><blockquote><blockquote><blockquote><blockquote><div align="center"><blockquote><blockquote><blockquote>⥐
-N
.
.
.
-1
0
1
.
.
.
N
⥎
</blockquote></blockquote></blockquote></div></blockquote></blockquote></blockquote></blockquote></blockquote>