264  is the sum of the rows of the following Magic Square :
[ Note 264² is palindrome 69696, see WONplate 26 ]

96	11	89	68
88	69	91	16
61	86	18	99
19	98	66	81

This Magic Square appears in the book "Arithmetricks"
by Jerome S. Meyer (Scholastic Magazines, 1965).
It is strobogrammatic i.e. it remains magic when turned upside down !
So let's do it ! [ Info & source given by David W. Wilson. ]

16	68	99	81
91	89	18	66
88	96	61	19
69	11	86	98