Illustration for A002110, A005867, A038110, A060753
Frank Ellermann (Frank.Ellermann(AT)t-online.de)
Date: Tue, 24 Apr 2001

Prime sieves:       candidates       numbers                 "test efficiency"
EIS-sequences:         A005867       A002110                 A038110   A060753
               1 =           1 of          2 = 2                   1 /       2
             2*1 =           2 of          6 = 2*3                 1 /       3
           4*2*1 =           8 of         30 = 2*3*5               4 /      15
         6*4*2*1 =          48 of        210 = 2*3*5*7             8 /      35
      10*6*4*2*1 =         480 of       2310 = 2*3*5*7*11         16 /      77
   12*10*6*4*2*1 =        5760 of      30030 = 2*3*5*7*11*13     192 /    1001
   16* .. *4*2*1 =       92160 of     510510 = 2*3*5* .. *17    3072 /   17017
   18* .. *4*2*1 =     1658880 of    9699690 = 2*3*5* .. *19   55296 /  323323
   22* .. *4*2*1 =    36495360 of  223092870 = 2*3*5* .. *23  110592 /  676039
   28* .. *4*2*1 =  1021870080 of 6469693230 = 2*3*5* .. *29  442368 / 2800733