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Re: prime numbers and African artifactVolker Hetzer (vhe@informatik.tu-chemnitz.de)12 Jul 95 15:11:37 GMT
nickb@harlequin.co.uk (Nick Barnes) writes:
:In article <rfJ0meEYsDj7075yn@fox.nstn.ns.ca> doldridg@fox.nstn.ns.ca
:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
:start at the second pebble and remove every 2nd pebble:
:1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53
:start at the 3rd pebble and remove every 3rd pebble (watch carefully):
:1 3 7 9 13 15 19 21 25 27 31 33 37 39 43 45 49 51 55 57 61 63 67 69 73 75
:start at the, erm, 7th pebble and remove every 7th pebble:
:1 3 7 9 13 15 21 25 27 31 33 37 43 45 49 51 55 57 63 67 69 73 75
:etc, leaving you with this:
:1 3 7 9 13 15 21 25 31 33 37 43 49 51 63 67 69 73 75
See you!
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