numbers ∕ four-digit numbers 40xxtable of four-digit numbers (digits) ⫽ 4000 ― 409940x040x140x240x340x440x540x640x740x840x94000400140024003400440054006400740084009401040114012401340144015401640174018401940204021402240234024402540264027402840294030403140324033403440354036403740384039404040414042404340444045404640474048404940504051405240534054405540564057405840594060406140624063406440654066406740684069407040714072407340744075407640774078407940804081408240834084408540864087408840894090409140924093409440954096409740984099
@ifckr.v.0.