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 A011538 Numbers that contain an 8. 33
 8, 18, 28, 38, 48, 58, 68, 78, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 98, 108, 118, 128, 138, 148, 158, 168, 178, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 198, 208, 218, 228, 238, 248, 258, 268, 278, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS In China, numbers with many 8 digits are considered auspicious because the character for 8 (八) sounds like the character for wealth (發). - Charles R Greathouse IV, Aug 28 2012 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..3439 Index entries for 10-automatic sequences. FORMULA a(n) ~ n. - Charles R Greathouse IV, Aug 28 2012 MATHEMATICA Select[Range[400], DigitCount[#, 10, 8]>0 &] (* Vincenzo Librandi, Feb 15 2017 *) PROG (PARI) is(n)=!!setsearch(Set(digits(n)), 8) \\ Charles R Greathouse IV, Feb 12 2017 (Magma) [n: n in [0..400] | 8 in Intseq(n) ]; // Vincenzo Librandi, Feb 15 2017 (GAP) Filtered([1..290], n->8 in ListOfDigits(n)); # Muniru A Asiru, Feb 24 2019 (Python) def ok(n): return '8' in str(n) print(list(filter(ok, range(290)))) # Michael S. Branicky, Aug 18 2021 CROSSREFS Supersequence of A043521. Sequence in context: A347640 A347995 A248015 * A283611 A043521 A277595 Adjacent sequences: A011535 A011536 A011537 * A011539 A011540 A011541 KEYWORD nonn,base,easy AUTHOR N. J. A. Sloane. STATUS approved

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Last modified May 26 14:42 EDT 2024. Contains 372826 sequences. (Running on oeis4.)