This is off-topic, but I wasn't able to get an answer on a few math forums, so I thought I'd pass it by the diverse Perl community. By accident my Perl program produced some output - incorrect, but interesting. I was wondering if anyone recognizes the numerical pattern or what it is called? I couldn't find info on this during any of my searches.
The program took a number sequence. For example <10-100>, reversed the digits and calculated the difference of the original number. So the calculations look like this: <10-01=9; 11-11=0; 12-21=9; 13-31=18; etc.>. Two things were noticeable, One, a pattern repeated (see output example below). Two, the separation between differences was always <9>. Patterns were present, albeit different, from <100-999>, and <1000-9999>. Can someone tell me what this is called? ## Example Output ## 10 - 01 = 9 11 - 11 = 0 12 - 21 = 9 13 - 31 = 18 14 - 41 = 27 15 - 51 = 36 16 - 61 = 45 17 - 71 = 54 18 - 81 = 63 19 - 91 = 72 20 - 02 = 18 21 - 12 = 9 22 - 22 = 0 23 - 32 = 9 24 - 42 = 18 25 - 52 = 27 26 - 62 = 36 27 - 72 = 45 28 - 82 = 54 29 - 92 = 63 30 - 03 = 27 31 - 13 = 18 ## END Example Output ## Thanks in advance for any information. This is driving me crazy. nyec -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
