The problem of finding the law of sequence Let the sequence {1,4,9,16,25, x, y} satisfy a certain rule, y is not equal to 49, how many groups of solutions to ask x? Please list them all

The problem of finding the law of sequence Let the sequence {1,4,9,16,25, x, y} satisfy a certain rule, y is not equal to 49, how many groups of solutions to ask x? Please list them all

{1,4,9,16,25,x,y}
1 (8) 9 (16) 25 53
4 16 28
{1,4,9,16,25,x,y}
1 (8) 9 (16) 25 61
4 16 36
{1,4,9,16,25,x,y}
1 (8) 9 (16) 25 89
4 16 64