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Search: id:A145382
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| A145382 |
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Write the nth prime in binary. Change all 0's to 1's and all 1's to 0's. a(n) is the decimal equivalent of the result. |
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+0
2
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| 1, 0, 2, 0, 4, 2, 14, 12, 8, 2, 0, 26, 22, 20, 16, 10, 4, 2, 60, 56, 54, 48, 44, 38, 30, 26, 24, 20, 18, 14, 0, 124, 118, 116, 106, 104, 98, 92, 88, 82, 76, 74, 64, 62, 58, 56, 44, 32, 28, 26, 22, 16, 14, 4, 254, 248, 242, 240, 234, 230, 228, 218, 204, 200, 198, 194, 180, 174
(list; graph; listen)
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OFFSET
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1,3
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COMMENT
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a(n) = A035327(p(n)), where p(n) is the nth prime.
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LINKS
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Leroy Quet, Home Page (listed in lieu of email address)
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FORMULA
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a(n)=2^{1+floor(log[2](p(n)))}-n-1, where p(n) is the nth prime. [From Emeric Deutsch (deutsch(AT)duke.poly.edu), Oct 19 2008]
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MAPLE
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f:=proc(n) options operator, arrow: 2^(1+floor(log[2](n)))-n-1 end proc: seq(f(ithprime(n)), n=1..71); [From Emeric Deutsch (deutsch(AT)duke.poly.edu), Oct 19 2008]
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CROSSREFS
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A035327
Sequence in context: A163123 A068773 A133168 this_sequence A078909 A067458 A088330
Adjacent sequences: A145379 A145380 A145381 this_sequence A145383 A145384 A145385
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KEYWORD
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base,nonn
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AUTHOR
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Leroy Quet, Oct 09 2008
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EXTENSIONS
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Extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), Oct 19 2008
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