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A141569
Bases and exponents in the prime decomposition of n replaced by composites with these indices.
2
4, 6, 8, 46656, 10, 48, 14, 1679616, 262144, 60, 20, 373248, 22, 84, 80, 10077696, 27, 1572864, 30, 466560, 112, 120, 35, 13436928, 1000000, 132, 16777216, 653184, 44, 480, 46, 60466176, 160, 162, 140, 12230590464, 54, 180, 176, 16796160, 58, 672, 62
OFFSET
1,1
COMMENTS
Start from the prime decomposition of n, not writing down exponents which equal 1. That is the list 1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3,.. Replace each number i in this representation by the i-th composite c(i)=A002808(i). This generates the sequence of a(n), namely c(1), c(2), c(3), c(2)^c(2), c(5), c(2)*c(3), c(7), c(2)^c(3), c(3)^c(2), c(2)*c(5), c(11), c(2)^c(2)*c(3),...
CROSSREFS
Sequence in context: A013284 A013290 A095211 * A200621 A210665 A228586
KEYWORD
nonn
AUTHOR
EXTENSIONS
Edited and corrected by R. J. Mathar, Aug 21 2008
STATUS
approved