

A207802


Permutation of positive numbers. See comments.


1



1, 2, 3, 4, 5, 8, 6, 16, 7, 32, 9, 64, 10, 128, 12, 256, 11, 512, 18, 1024, 15, 2048, 24, 4096, 14, 8192, 27, 16384, 20, 32768, 36, 65536, 13, 131072, 48, 262144, 25, 524288, 54, 1048576, 21, 2097152, 72, 4194304, 30, 8388608, 81, 16777216, 22, 33554432, 96, 67108864, 40, 134217728, 108
(list;
graph;
refs;
listen;
history;
text;
internal format)



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.


LINKS

Table of n, a(n) for n=1..55.


FORMULA

For n>1, a(n) = A125624(A209268(n1)).  Ivan Neretin, Apr 30 2016


CROSSREFS

Cf. A207790, A207800, A207801.
Sequence in context: A219360 A275877 A245819 * A222250 A122317 A130992
Adjacent sequences: A207799 A207800 A207801 * A207803 A207804 A207805


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



