0=1^2-12=2^2-212=4^2-442=7^2-7110=11^2-11而1,2,4,7,11,……的规律为后一项与前一项的差分别为1,2,3,4,……1,2,4,7,11的下一项为11+5=160,2,12,42,110的下一项为16^2-16=240注：下面计算通项公式1,2,4,7,11,……的第n项为0.5n^2-0.5n+10,2,12,42,110,……的第n项为(0.5n^2-0.5n+1)^2-(0.5n^2-0.5n+1)=(0.5n^2-0.5n+1)*(0.5n^2-0.5n)=(n^4-2n^3+3n^2-2n)/4
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