連續數字成三角形 (15313)

C2右拉 下拉{=IF((ROW(A1)<COLUMN(A1))+(ROW(A1)>$A$2),"",SUM(ROW(INDIRECT("1:"&ROW(A1)))-1)+COLUMN(A1)+$A$6-1)

另解C2=IF((ROW(A1)<COLUMN(A1))+(ROW(A1)>$A$2),"",MAX($C$1:L1)+COLUMN(A1)+$A$6-1)

C14右拉 下拉{=IF((ROW(A1)>COLUMN(A1))+(ROW(A1)>$A$2)+(COLUMN(A1)>$A$2),"",MAX($C$13:L13)+SUM(N($B14:B14<>""))+1)



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