keen

@echo off&setlocal enabledelayedexpansion
set /a a=1,b=1
:lp
set /a c=a+b,n+=1
if %n% leq 2 (set /p=%a% <nul) else (
   set /a a=!b!,b=!c!
   set /p=!c! <nul
)
if %n% equ 46 goto end
goto lp
:end
pause>nul
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