Palindromic arrangement and alchemical summation.

 De ce palindrom ?
https://www.google.com/url?sa=t&source=web&rct=j&url=https://ictp.acad.ro/anisiu/papers/2006-Anisiu-A-K-Properties.pdf&ved=2ahUKEwislLbaz-_mAhUDY1AKHZF7CFwQFjAFegQIAhAB&usg=AOvVaw1BxjiLMfCi3La8TVUEcZAc