正 長 四 三種方形數 (15139)

D2=SUMPRODUCT(TEXT(B2-ROW($1:$99)+1,"0;!0")*TEXT(C2-ROW($1:$99)+1,"0;!0"))

E2=SUMPRODUCT(ROW(INDIRECT("1:"&B2)))*SUMPRODUCT(ROW(INDIRECT("1:"&C2)))

F2(可直接結合 D E公式)=E2-D2