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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
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
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved

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