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Table of n, a(n) for n=1..52.
337 = 101010001 base 2, reverse the sequence of ones and zeros: 100010101 base 2 = 277. 337, 733 and 277 are all prime.
Cf. A007500, A074832.
Sequence in context: A206864 A155801 A228118 * A023210 A153601 A153602
Adjacent sequences: A136183 A136184 A136185 * A136187 A136188 A136189
Harry J. Smith, Dec 19 2007