September 2017 Update

Task/Fibonacci-n-step-number-sequences/Batch-File/fibonacci-n-step-number-sequences.bat

@@ -0,0 +1,48 @@
+@echo off
+
+echo Fibonacci Sequence:
+call:nfib 1 1
+echo.
+
+echo Tribonacci Sequence:
+call:nfib 1 1 2
+echo.
+
+echo Tetranacci Sequence:
+call:nfib 1 1 2 4
+echo.
+
+echo Lucas Numbers:
+call:nfib 2 1
+echo.
+
+pause>nul
+exit /b
+
+:nfib
+setlocal enabledelayedexpansion
+
+for %%i in (%*) do (
+  set /a count+=1
+  set seq=!seq! %%i
+)
+set "seq=%seq% ^| "
+set n=-%count%
+set /a n+=1
+for %%i in (%*) do (
+  set F!n!=%%i
+  set /a n+=1
+)
+
+for /l %%i in (1,1,10) do (
+  set /a termstart=%%i-%count%%
+  set /a termend=%%i-1
+  for /l %%j in (!termstart!,1,!termend!) do (
+    set /a F%%i+=!F%%j!
+  )
+  set seq=!seq! !F%%i!
+)
+echo %seq%
+
+endlocal
+exit /b