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Search: id:A124661
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| A124661 |
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Primes which have only nonnegative amplitudes defined as ((Prime[k + n] + Prime[k - n])/2) - Prime[k] for k=3,4,5,..., n=1,2,..,k-3,k-2. |
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+0
1
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| 5, 7, 13, 19, 23, 31, 43, 47, 73, 83, 109, 113
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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31 belonging because all amplitudes are nonnegative {2, 1, 0, 1, 2, 4, 3, 5,
6} 29 don't belonging because some amplitudes are negative {-2, -1, 0, -1, 0, 1, 3, 3}
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CROSSREFS
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Adjacent sequences: A124658 A124659 A124660 this_sequence A124662 A124663 A124664
Sequence in context: A109269 A114275 A156107 this_sequence A084932 A038908 A163427
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KEYWORD
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nonn,uned
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AUTHOR
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Artur Jasinski (grafix(AT)csl.pl), Dec 23 2006
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