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Search: id:A111071
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| A111071 |
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Difference between the product of two consecutive primes and the next prime. |
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+0
7
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| 1, 8, 24, 64, 126, 202, 300, 408, 636, 862, 1106, 1474, 1716, 1968, 2432, 3066, 3532, 4016, 4684, 5104, 5684, 6468, 7290, 8532, 9694, 10296, 10912, 11550, 12190, 14220, 16500, 17808, 18894, 20560, 22342, 23544, 25424, 27048, 28712, 30786, 32208
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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C. P. Simoes, Teste de Desempenho Mental.
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FORMULA
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a(n) = p(n)*p(n+1)-p(n+2)
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EXAMPLE
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a(4)=7*11-13=64
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MAPLE
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seq(ithprime(n)*ithprime(n+1)-ithprime(n+2), n=1..50); (Deutsch)
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MATHEMATICA
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f[n_] := Prime[n]Prime[n + 1] - Prime[n + 2]; Table[ f[n], {n, 41}] (* Robert G. Wilson v *)
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CROSSREFS
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Cf. A000040.
Sequence in context: A060602 A066605 A066497 this_sequence A090336 A005051 A083583
Adjacent sequences: A111068 A111069 A111070 this_sequence A111072 A111073 A111074
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KEYWORD
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nonn
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AUTHOR
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Christopher M. Tomaszewski (cmt1288(AT)comcast.net), Oct 09 2005
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EXTENSIONS
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More terms from Robert G. Wilson v (rgwv(at)rgwv.com) and Emeric Deutsch (deutsch(AT)duke.poly.edu), Oct 10 2005
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