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 A066195 Smallest prime containing n zeros in its binary expansion. 13
 3, 2, 19, 17, 67, 131, 523, 257, 1033, 2053, 4099, 8209, 16417, 32771, 65539, 65537, 262147, 524353, 1048609, 2097169, 4194433, 8388617, 16777729, 67108913, 67239937, 134250497, 268435459, 536903681, 1073741827, 2147483713, 8589934627, 8589934609, 17179869697 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS A023416(a(n)) = n and A023416(m) <> n for m < A049084(a(m)). LINKS Alois P. Heinz, Table of n, a(n) for n = 0..1000 MATHEMATICA Do[ k = 1; While[ Count[ IntegerDigits[ Prime[ k ], 2 ], 0 ] != n, k++ ]; Print[ Prime[ k ] ], {n, 1, 24} ] PROG (Haskell) import Data.List (find) import Data.Maybe (fromJust) a066195 n = fromJust \$ find ((== n) . a023416) a000040_list -- Reinhard Zumkeller, Feb 19 2013 CROSSREFS Cf. A061712. Sequence in context: A366377 A057026 A032448 * A090587 A094554 A223881 Adjacent sequences: A066192 A066193 A066194 * A066196 A066197 A066198 KEYWORD base,nonn AUTHOR Robert G. Wilson v, Dec 15 2001 EXTENSIONS a(25)-a(32) from Alois P. Heinz, Jun 28 2015 STATUS approved

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Last modified June 12 17:08 EDT 2024. Contains 373339 sequences. (Running on oeis4.)