
The 500 first digits of 'pi' displayed as an Impossible Structure [Les 500 premiers chiffres de 'pi' visualisés comme une structure paradoxale].
                    5----1----4
                    |         |    .
                    |         |    .
                    9    3----1    .
                    |              |
                    |              |
                    2----6----5----3
and then displayed using the basic following symbols:
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