来自李性存的问题
A为1时B为7,A为2时B为19,A为3时B为37,A为4时B为61,A为n时B为多少?
A为1时B为7,A为2时B为19,A为3时B为37,A为4时B为61,A为n时B为多少?
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2020-11-20 17:13
A为1时B为7,A为2时B为19,A为3时B为37,A为4时B为61,A为n时B为多少?
A为1时B为7,A为2时B为19,A为3时B为37,A为4时B为61,A为n时B为多少?
3n(n+1)+1
规律寻找,A=1,B=3×1×2+1
A=2,B=3×2×3+1
A=3,B=3×3×4+1
A=4,B=3×4×5+1