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 A308711 Left-truncatable primes in base-10 bijective numeration. 1
 2, 3, 5, 7, 13, 17, 23, 37, 43, 47, 53, 67, 73, 83, 97, 103, 107, 113, 137, 167, 173, 197, 223, 283, 307, 313, 317, 337, 347, 353, 367, 373, 383, 397, 443, 467, 503, 523, 547, 607, 613, 617, 643, 647, 653, 673 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Not identical to A033664; in fact a strict subsequence of A033664. For example, 2003 belongs to A033664 but not to this sequence, since in bijective numerals 2003 is 19X3, whose suffix 9X3 = 1003 = 17 * 59. LINKS Robin Houston, Table of n, a(n) for n = 1..8391 Wikipedia, Bijective numeration PROG (Sage) DIGITS = "123456789X" DECODE = {d: i + 1 for i, d in enumerate(DIGITS)} def decode(s):     return reduce(lambda n, c: 10 * n + DECODE[c], s, 0) def search(s):     n = decode(s)     if n > 0:         if not is_prime(n): return         yield n     for digit in DIGITS: yield from search(digit + s) full = sorted(search("")) full[:10] CROSSREFS Cf. A024785, A033664. Sequence in context: A234695 A067905 A042993 * A033664 A024785 A069866 Adjacent sequences:  A308708 A308709 A308710 * A308712 A308713 A308714 KEYWORD nonn,base,easy,fini,full AUTHOR Robin Houston, Jun 19 2019 STATUS approved

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Last modified March 30 15:42 EDT 2020. Contains 333127 sequences. (Running on oeis4.)