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A180006
Composite numbers that can be obtained from primes by interchanging the first and last digits.
1
91, 32, 92, 14, 34, 74, 35, 95, 16, 76, 38, 98, 301, 901, 721, 731, 931, 361, 371, 391, 791, 112, 322, 722, 922, 332, 932, 142, 152, 752, 362, 962, 172, 772, 182, 382, 392, 703, 713, 133, 943, 763, 973, 793, 104, 904, 914, 124, 134, 334, 934, 344, 944, 754
OFFSET
1,1
COMMENTS
The primes must contain at least two digits.
EXAMPLE
The composite number 752 is obtained from the prime 257 by interchanging the first and last digits.
CROSSREFS
The corresponding primes are A076056. Cf. A002808, A179826.
Sequence in context: A119656 A368238 A339141 * A259085 A033411 A329915
KEYWORD
nonn,base
AUTHOR
Parthasarathy Nambi, Aug 06 2010
EXTENSIONS
More terms from Vincenzo Librandi, Aug 06 2010
STATUS
approved