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A046843
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Hyper-Cullen primes of 4th species: values of n that in hc(n)=n*2^n-n-1 generate a prime.
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1
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2, 4, 8, 12, 16, 40, 80, 314, 478, 604, 634, 790, 868, 1264, 1376, 2536, 3544, 6564, 7268, 7780, 8366
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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MATHEMATICA
| Select[Range[10000], PrimeQ[# 2^#-#-1]&] (* From Harvey P. Dale, Oct 10 2011 *)
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CROSSREFS
| Cf. A046842.
Sequence in context: A170892 A052184 A152768 * A152125 A176562 A100057
Adjacent sequences: A046840 A046841 A046842 * A046844 A046845 A046846
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KEYWORD
| nonn
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AUTHOR
| Felice Russo (frusso(AT)micron.com)
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EXTENSIONS
| Sign in definition corrected by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Oct 10 2010
More terms from Harvey P. Dale, Oct 10 2011
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