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 A174332 Least prime q of which prime(n) is a proper binary substring. 4
 5, 7, 11, 23, 23, 29, 71, 79, 47, 59, 127, 101, 83, 107, 191, 107, 239, 251, 269, 199, 293, 317, 167, 179, 353, 229, 359, 431, 439, 227, 383, 263, 787, 557, 599, 607, 631, 419, 1447, 347, 359, 727, 383, 449, 709, 797, 467, 479, 739, 919, 467, 479, 967, 503, 769 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) = A208238(A000040(n)) = A208241(A000040(n)). - Reinhard Zumkeller, Feb 14 2013 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 EXAMPLE a(1)=5 since 2_10 = 10_2 is a substring of 5_10 = 101_2. MATHEMATICA f[n_] := Block[{k = n + 1, p = StringTake[ ToString@ IntegerDigits[ Prime@n, 2], {2, -2}]}, While[q = StringTake[ ToString@ IntegerDigits[ Prime@k, 2], {2, -2}]; StringPosition[q, p] == {}, k++ ]; Prime@k]; Array[f, 55] PROG (Haskell) a174332 = a208238 . a000040 -- Reinhard Zumkeller, Feb 14 2013 CROSSREFS Cf. A000040, A004676, A007088. Sequence in context: A128841 A057733 A318078 * A248595 A266233 A124111 Adjacent sequences: A174329 A174330 A174331 * A174333 A174334 A174335 KEYWORD base,nonn AUTHOR Robert G. Wilson v, Mar 15 2010 STATUS approved

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Last modified December 4 06:57 EST 2023. Contains 367557 sequences. (Running on oeis4.)