OFFSET
1,2
COMMENTS
a(1)=1; on places 2,4,6,8,... we put 2^m, m=1,2,3,..., i.e., numbers with the greatest prime divisor p_1=2; on places 3,7,11,15,... we put numbers with the greatest prime divisor p_2=3; on places 5,13,21,29,... we put numbers with the greatest prime divisor p_3=5; etc.
For general description of the order, see the comment in A207790.
FORMULA
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Shevelev and Peter J. C. Moses, Feb 20 2012
EXTENSIONS
a(30) fixed by Ivan Neretin, Apr 30 2016
STATUS
approved