Quadratzahlen:

02 = 0          12 = 1                   22 = 4               32 = 9               42 = 16                 52 = 25

                    62 = 36                 72 = 49             82 = 64             92 = 81              102 = 100

                   112 = 121            122 = 144         132 = 169         142 = 196             152 = 225

                   162 =256             172 = 289         182 = 324         192 = 361             202 = 400

                   212 = 441            222 = 484         232 = 529         242 = 576             252 =625