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Search: id:A134607
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| A134607 |
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Nonprime numbers such that the square root of the sum of squares of their prime factors is a prime. |
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+0
1
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| 48, 320, 486, 3072, 3150, 6174, 7128, 7650, 10890, 11466, 15000, 18018, 18810, 25578, 27846, 29400, 30240, 39546, 40590, 45056, 45927, 53010, 54600, 55062, 59202, 73440, 75582, 77418, 80910, 85800, 90552, 92106, 95238, 96642, 98838
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Numbers included in A134605, but not in A134606. a(0)=48 is the minimal number with this property.
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EXAMPLE
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a(1)=320, since 320=2*2*2*2*2*2*5 and sqrt(6*2^2+5^2)=sqrt(49)=7.
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CROSSREFS
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Cf. A001597, A025475, A134333, A134344, A134376.
Cf. A134600, A134602, A134605, A134611, A134616, A134618, A134620.
Sequence in context: A115056 A001337 A097639 this_sequence A037056 A110275 A019558
Adjacent sequences: A134604 A134605 A134606 this_sequence A134608 A134609 A134610
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KEYWORD
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nonn
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AUTHOR
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Hieronymus Fischer (Hieronymus.Fischer(AT)gmx.de), Nov 11 2007
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