User blog comment:Ynought/Extended array hierarchy/@comment-35470197-20190201222953

I think that the recent version is not terminating. For example, in order to compute \(I = I_0 = (10,\ldots,10)_{(10,\ldots,10)} = (10+I_{10},\ldots,10+I_{10})_{10+I_{10},\ldots,9}\), you need to compute \(I_{10}\). But in order to compute \(I_{10}\), you need to compute \(I_9,I_8,\ldots,I_0 = I\).