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A138603 Numbers n such that 2^(2*n-43)-43 is prime. 0
22, 24, 36, 60, 1678 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

2^(2*36-43)-43=536870869, 2^(2*60-43)-43=151115727451828646838229, ...

MATHEMATICA

q=43; For[i=q, i<=q, a={}; Do[x=2^(2*n-i)-i; If[PrimeQ[x], AppendTo[a, n]], {n, 13^3}]; Print["2^(2*n-", i, ")-", i, " ", a]; i=i+2]

CROSSREFS

Sequence in context: A165483 A067189 A030593 * A181454 A155911 A061411

Adjacent sequences:  A138600 A138601 A138602 * A138604 A138605 A138606

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), May 13 2008

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Last modified February 14 08:58 EST 2012. Contains 205614 sequences.