AA would become AB after AA69009.
AA would become AB after AA69009.
Find this formula in D1 of the attached filled down to row 5000. It will work in Excel 2013 and newer.Formula:
=BASE(DECIMAL("AA",36)+CEILING(ROWS($A$1:$A1)/(59*9),1)-1,36)&MOD(CEILING(ROWS($A$1:$A1)/9,1)-1,59)+11&
TEXT(MOD(ROWS($A$1:$A1)-1,9)+1,"000")
PS I haven't found a way to make it stop after YD yet. Working on it.
Last edited by FlameRetired; 12-27-2017 at 09:21 PM.
Dave
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