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A175329
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a(n) = bitwise OR of prime(n) and prime(n+1).
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4
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3, 7, 7, 15, 15, 29, 19, 23, 31, 31, 63, 45, 43, 47, 63, 63, 63, 127, 71, 79, 79, 95, 91, 121, 101, 103, 111, 111, 125, 127, 255, 139, 139, 159, 151, 159, 191, 167, 175, 191, 183, 191, 255, 197, 199, 215, 223, 255, 231, 237, 239, 255, 251, 507, 263, 271, 271, 287
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OFFSET
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1,1
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COMMENTS
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Read each binary representation of the primes from right to left and then OR respective digits to form the binary equivalent of each term of this sequence.
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LINKS
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Table of n, a(n) for n=1..58.
Wikipedia, Bitwise operation
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MAPLE
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read("transforms") ; A175329 := proc(n) ORnos(ithprime(n), ithprime(n+1)) ; end proc: seq(A175329(n), n=1..60) ; # R. J. Mathar, Apr 15 2010
# second Maple program:
a:= n-> Bits[Or](ithprime(n), ithprime(n+1)):
seq(a(n), n=1..70); # Alois P. Heinz, Apr 16 2020
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PROG
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(PARI) a(n) = bitor(prime(n), prime(n+1)); \\ Michel Marcus, Apr 20 2020
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CROSSREFS
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Cf. A000040, A175330 (bitwise AND).
Cf. A086799 (bitwise OR of n and n-1)).
Sequence in context: A118259 A060845 A059478 * A081218 A240422 A130003
Adjacent sequences: A175326 A175327 A175328 * A175330 A175331 A175332
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KEYWORD
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base,nonn
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AUTHOR
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Leroy Quet, Apr 07 2010
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EXTENSIONS
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More terms from R. J. Mathar, Apr 15 2010
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STATUS
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approved
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