loop.bat

@echo off
setlocal enabledelayedexpansion

:start
cls

set COUNT=19
set innerColor=n
set startCnt=2


set pageCnt=10
set /a roopCnt=%COUNT% / %pageCnt%
set /a roopCntRst=%COUNT% %% %pageCnt%

echo.
echo %startCnt%
echo %pageCnt%
echo %roopCnt%
echo %roopCntRst%

set baseNum=0
set pageNum=0
set x=1


for /l %%j in ( 1,1,%roopCnt%) do ( 
echo -----
echo j:%%j
call :baseNumber %%j
echo -----

if %%j==1 ( call :firstRoop %%j ) else ( call :secondRoop %%j )

 ) 

rem 余りページ
set baseNum=%pageNum%

for /l %%k in (1,1,%roopCntRst% ) do ( 
call :pageNumber %%k %%j
 ) 

goto :exit

:firstRoop

for /l %%i in ( %startCnt%,1,%pageCnt% ) do ( 
call :pageNumber %%i %1
 ) 
goto :eof

:secondRoop
for /l %%i in ( 1,1,%pageCnt% ) do ( 
call :pageNumber %%i %1
 ) 
goto :eof

:baseNumber
if not %1 == 1 ( 
set /a x=%1-1
set /a baseNum="pageCnt * x"
 ) 
echo x:%x%
echo pageCnt:%pageCnt%
echo baseNum:%baseNum%
goto :eof

:pageNumber
if not %2 == 1 ( 
set /a pageNum="baseNum + %1"
 ) else ( 
set pageNum=%1
 ) 

echo %1.jpg
echo %pageNum%
goto :eof

:exit
pause
exit