数字规律题:
28,57,115,231,()
28,57,115,231,463:28*2+1=57,……,231*2+1=463
7,9,40,74,1526,()
7,9,40,74,1526,5436:7*7-9=40,9*9-7=74,40*40-74=1526,74*74-40=5436