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A090420
Numbers having a unique representation as concatenation of primes in binary.
3
2, 3, 5, 7, 10, 13, 14, 15, 17, 19, 21, 22, 30, 37, 41, 42, 53, 54, 55, 58, 62, 67, 70, 73, 78, 81, 85, 86, 89, 90, 97, 101, 103, 107, 111, 115, 117, 122, 131, 137, 139, 141, 143, 149, 150, 159, 163, 165, 166, 169, 170, 177, 193, 197, 199, 211, 214, 215, 218
OFFSET
1,1
COMMENTS
A090418(a(n)) = 1; subsequence of A090421.
LINKS
PROG
(Haskell)
a090420 n = a090420_list !! (n-1)
a090420_list = filter ((== 1) . a090418) [1..]
-- Reinhard Zumkeller, Aug 07 2012
CROSSREFS
Cf. A090423 (subsequence).
Sequence in context: A109598 A117959 A117952 * A162999 A064509 A096221
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Nov 30 2003
EXTENSIONS
Based on corrections in A090418, data recomputed by Reinhard Zumkeller, Aug 07 2012
STATUS
approved