两个非0自然数[z1 z2]距离[2t] ;平方距=4t[z1+t]、距域素数不少于4t
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1*1...3*3=4==4t=4|
3*3...5*5=5>4t=4| 1*1...5*5=09>4t==8|
5*5...7*7=6>4t=4| 1*1...7*7=15>4t=12| 3*3...7*7=11>4t==8|
7*7...9*9=7>4t=4| 1*1...9*9=22>4t=16| 3*3...9*9=18>4t=12| 5*5...9*9=13>4t==8
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1*1...3*3=4==4t=4|
3*3...5*5=5>4t=4| 1*1...5*5=09>4t==8|
5*5...7*7=6>4t=4| 1*1...7*7=15>4t=12| 3*3...7*7=11>4t==8|
7*7...9*9=7>4t=4| 1*1...9*9=22>4t=16| 3*3...9*9=18>4t=12| 5*5...9*9=13>4t==8