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Search: id:A101997
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| A101997 |
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16n-1 such that 4n-1, 8n-1, 16n-1, 32n-1 and 64n-1 are primes. |
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6
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| 719, 214559, 253679, 507359, 508559, 1017119, 1184399, 1363679, 2429279, 3242159, 4276799, 4490639, 6394799, 6486479, 7283999, 7464959, 7650719, 7683839, 8181359, 8553599, 8631599, 8981279, 9112319, 9428879, 10671119
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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4*45-1=179, 8*45-1=359, 16*45-1=719, 32*45-1=1439 and 64*45-1=2879 are primes, so the first entry is 719.
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CROSSREFS
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Cf. A101994, A101995, A101996, A101998, A101999.
Sequence in context: A127227 A139177 A064980 this_sequence A139195 A056467 A056457
Adjacent sequences: A101994 A101995 A101996 this_sequence A101998 A101999 A102000
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KEYWORD
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easy,nonn
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AUTHOR
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Douglas Stones (dssto1(AT)student.monash.edu.au), Dec 23 2004
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