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A011538 Numbers that contain an 8. 25
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 (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

CROSSREFS

Sequence in context: A051370 A290614 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 January 17 18:48 EST 2019. Contains 319251 sequences. (Running on oeis4.)