(...) Being 13 at the table is considered an omen of bad luck and imminent death too, over here - just for that very reason. *sigh*
I think at the point in time where artists were painting Last Supper scenes (using DaVinci's perspective techniques), the number thirteen was considered by occultists and pagans to actually be a "lucky number".. Christianity followed suit, I guess..
Even today, the proverbial "Baker's Dozen" still contains thirteen biscuits..

Stan (AZ.bbm)