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 A175330 a(n) = the decimal equivalent of (the binary representation of prime(n)) AND (the binary representation of prime(n+1)). 2
 2, 1, 5, 3, 9, 1, 17, 19, 21, 29, 5, 33, 41, 43, 37, 49, 57, 1, 67, 65, 73, 67, 81, 65, 97, 101, 99, 105, 97, 113, 3, 129, 137, 129, 149, 149, 129, 163, 165, 161, 177, 181, 129, 193, 197, 195, 211, 195, 225, 225, 233, 225, 241, 1, 257, 261, 269, 261, 273, 281 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Read each binary representation of the primes from right to left and then AND respective digits to form the binary equivalent of each term of this sequence. Indices of 1's: 2, 6, 18, 54, 564, 3512, 6542, 564163, 2063689, 54400028, ... - Alex Ratushnyak, Apr 22 2012 LINKS MAPLE read("transforms") ; A175330 := proc(n) ANDnos(ithprime(n), ithprime(n+1)) ; end proc: seq(A175330(n), n=1..60) ; # R. J. Mathar, Apr 15 2010 CROSSREFS Sequence in context: A286295 A026205 A082748 * A085261 A179218 A131119 Adjacent sequences:  A175327 A175328 A175329 * A175331 A175332 A175333 KEYWORD base,nonn AUTHOR Leroy Quet, Apr 07 2010 EXTENSIONS More terms from R. J. Mathar, Apr 15 2010 STATUS approved

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Last modified May 19 06:48 EDT 2019. Contains 323386 sequences. (Running on oeis4.)