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Re: prime numbers and African artifactNick Barnes (nickb@harlequin.co.uk)Wed, 12 Jul 1995 12:11:56 GMT
In article <rfJ0meEYsDj7075yn@fox.nstn.ns.ca> doldridg@fox.nstn.ns.ca
There's an easy procedure for producing the series--one that can even be
Of course, as described this will not leave you with the prime
start:
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
Nick Barnes, speaking for himself (around my tongue)
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