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A173168
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Primes of the form 2^k + 2k - 1.
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3
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3, 7, 13, 23, 41, 271, 2069, 16411, 32797, 134217781, 2199023255633, 1125899906842723, 2251799813685349, 2596148429267413814265248164610269, 11150372599265311570767859136324180752990493
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OFFSET
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1,1
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COMMENTS
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Primes in A061761. The values of k-1 are in A105330. These primes, multiplied by 2^(k-1), produce A105331, which are a subset of the dihedral perfect numbers, A083874.
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LINKS
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MATHEMATICA
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g[n_]:=2^n+2*n-1; Select[Array[g, 100], PrimeQ]
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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