

A141813


Primitive RMS numbers: RMS numbers which are not the product of two smaller RMS numbers.


5



1, 7, 41, 239, 3055, 6665, 9545, 9855, 26095, 34697, 155287, 380511, 421655, 627215, 814463, 823537, 1166399, 1204281, 1256489, 1289441, 1815073, 2265353, 2544697, 2627343, 3132935, 3188809, 3762639, 4647985, 4730879, 4963127, 4995569, 5054015, 5143945
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OFFSET

1,2


COMMENTS

RMS numbers (see A140480) are numbers such that the RMS (Root Mean Square) of their divisors is an integer. If A and B both appear in A140480 and GCD(A,B)=1, then A*B is also in A140480. This sequence contains only those RMS numbers that are not a product of smaller RMS numbers.


LINKS

Donovan Johnson, Table of n, a(n) for n = 1..666 (terms < 10^11)


EXAMPLE

The RMS Number 287 is not in the sequence because 287=7*41 and both 7 and 41 are RMS numbers.


CROSSREFS

Cf. A140480, A141812, A141814, A141815, A141816.
Sequence in context: A057009 A140480 A002315 * A088165 A287810 A292035
Adjacent sequences: A141810 A141811 A141812 * A141814 A141815 A141816


KEYWORD

nonn


AUTHOR

Andrew Weimholt, Jul 07 2008


STATUS

approved



