

A181097


Permutation of positive integers created from sequence A002808(n) = composites.


2



4, 6, 8, 1, 9, 2, 10, 3, 5, 7, 12, 11, 14, 13, 15, 16, 18, 17, 20, 19, 21, 22, 24, 23, 25, 26, 27, 28, 30, 29, 32, 31, 33, 34, 35, 36, 38, 37, 39, 40, 42, 41, 44, 43, 45, 46, 48, 47, 49, 50, 51, 52, 54, 53, 55, 56, 57, 58, 60, 59, 62, 61, 63, 64, 65, 66, 68, 67, 69, 70, 72, 71
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OFFSET

1,1


COMMENTS

Method of creation of sequence a(n) from b(n) = A002808(n):
Take b(1) and put in vacancy place a(1), swap this place and b(1), repeat with b(2), b(3), ...:
b(1) = 4, a(1) = 4, a(4) = 1,
b(2) = 6, a(2) = 6, a(6) = 2,
b(3) = 8, a(3) = 8, a(8) = 3,
b(4) = 9, a(5) = 9, a(9) = 5,
b(5) = 10, a(7) = 10, a(10) = 7,
...


LINKS

Table of n, a(n) for n=1..72.


FORMULA

a(n) = A135761(n) for n >= 11. a(n) = A181096(n) for n >= 11.


CROSSREFS

Sequence in context: A263357 A195387 A272028 * A206798 A200366 A217296
Adjacent sequences: A181094 A181095 A181096 * A181098 A181099 A181100


KEYWORD

nonn


AUTHOR

Jaroslav Krizek, Oct 02 2010


STATUS

approved



