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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
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
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.)