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Search: id:A070044
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| A070044 |
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n for which ceiling(n^1.5) is prime. |
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+0
2
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| 2, 7, 8, 11, 13, 14, 15, 17, 19, 21, 28, 29, 31, 34, 41, 54, 57, 71, 82, 83, 92, 96, 98, 102, 104, 108, 124, 130, 140, 142, 145, 147, 148, 156, 158, 171, 206, 213, 223, 231, 233, 240, 252, 254, 255, 261, 262, 266, 267, 275, 284, 297, 299, 300, 315, 322, 343, 354
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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ceiling(2^1.5)=3, so 2 is in the sequence. ceiling(3^1.5)=6, so 3 is not in the sequence.
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MATHEMATICA
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Select[Range[400], PrimeQ[Ceiling[ #^(3/2)]]&]
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PROGRAM
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(PARI) for (n=1, 1000, if (isprime(ceil(n^1.5)), write("primes15n.txt", n)))
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CROSSREFS
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The corresponding primes are in A070045.
Sequence in context: A075766 A005538 A053013 this_sequence A129850 A037073 A047239
Adjacent sequences: A070041 A070042 A070043 this_sequence A070045 A070046 A070047
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KEYWORD
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nonn
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AUTHOR
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Jon Perry (perry(AT)globalnet.co.uk), May 03 2002
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EXTENSIONS
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Edited by Dean Hickerson (dean(AT)math.ucdavis.edu), May 07 2002
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