OFFSET
1,2
COMMENTS
This is a permutation of A000961.
LINKS
Diana L. Mecum, Table of n, a(n) for n = 1..142
EXAMPLE
First prime, 2, is swapped with first prime power, 4.
Second prime, 3, is swapped with 2nd prime power, 8.
Third prime, 5, is swapped with 3rd prime power, 9.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Aug 04 2009
EXTENSIONS
Edited by N. J. A. Sloane, Aug 10 2009, based on email from Zak Seidov
More terms from Diana L. Mecum, Aug 04 2012
STATUS
approved