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Congratulations to Martin Ward for a very impressive solution to problem #14 using packed decimal to handle higher value Ackerman functions with up to 15 digit solutions.   I also posted my recursive macro code only solution which only handles up to 32 bit integer solutions.

A new problem #16 requiring routines to store and fetch bits to/from bit array representing numbers submitted by Jim Connelley has been posted.  Thanks Jim.   For the old timers this may remind you of how cool it was when HASP (Alias JES2) came out to speed up OS/PCP/MFT/MVT spooling using a bit array in memory to handle allocation of spool tracks as opposed to updating every sysout file in VTOC.

Don Higgins

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http://don.higgins.net