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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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A090418(a(n)) = 1; subsequence of A090421. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 PROG (Haskell) a090420 n = a090420_list !! (n-1) a090420_list = filter ((== 1) . a090418) [1..] -- Reinhard Zumkeller, Aug 07 2012 CROSSREFS Cf. A004676, A007088. Cf. A090423 (subsequence). Sequence in context: A109598 A117959 A117952 * A162999 A064509 A096221 Adjacent sequences: A090417 A090418 A090419 * A090421 A090422 A090423 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

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Last modified December 6 18:41 EST 2023. Contains 367614 sequences. (Running on oeis4.)