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Search: id:A100689
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| A100689 |
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p * 4^p - 1 where p is prime. |
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+0
1
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| 31, 191, 5119, 114687, 46137343, 872415231, 292057776127, 5222680231935, 1618481116086271, 8358680908399640575, 142962266571249025023, 698910239464707491627007, 198263834416799184651812863
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OFFSET
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1,1
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EXAMPLE
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2*4^2 - 1 = 31
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MATHEMATICA
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Do[Print[Prime[n]*4^(Prime[n]) - 1], {n, 1, 20}] - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 15 2006
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CROSSREFS
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Adjacent sequences: A100686 A100687 A100688 this_sequence A100690 A100691 A100692
Sequence in context: A042876 A042878 A023292 this_sequence A055816 A139998 A142654
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Dec 07 2004
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Feb 15 2006
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