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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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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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?

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

A为N时,B为77.如果您觉得正确或者采纳的话,麻烦给我好评哦,谢谢。