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Search: id:A051900
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| 5, 13, 17, 113, 97, 193, 257, 769, 11777, 13313, 59393, 12289, 40961, 114689, 65537, 2424833, 6946817, 786433, 5767169, 7340033, 23068673, 155189249, 595591169, 1224736769, 167772161, 469762049, 2281701377, 3489660929, 12348030977
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OFFSET
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1,1
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COMMENT
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While among the first 101 of A051886[n] 46 distinct primes occur, here all derived 2^w-safe primes are different.
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FORMULA
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2^w - generalization of A005385.
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EXAMPLE
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1+2^11*A051886[11] = 2048*29+1 = 59393 = a[11] is the smallest q prime so that (q-1)/2048 is also a (minimal,generalized Germain-) prime. The 101-th term is 2385718429629527733616795432517633=1+(2^101)*941.
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CROSSREFS
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Cf. A005385, A051886.
Sequence in context: A019382 A145040 A125146 this_sequence A120062 A081769 A101864
Adjacent sequences: A051897 A051898 A051899 this_sequence A051901 A051902 A051903
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KEYWORD
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nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu), Dec 16 1999
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