numerele pare sunt din 2 in 2 : 2, 4, 6, 8....
a /----a---/
b /----a---/..2../
c /----a---/..2../..2../ }1044
d /----a---/..2../..2../..2..|
In total avem 4 segmente egale si 2 se repeta de 6 ori
4a+2x6 = 1044
4a+12=1044
4a=1044-12
4a=1032
a=258
b=258+2 = 260
c=260+2 = 262
d=262+2 = 264