The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A171077

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A171077

Numbers that are multiples of 28 and contain both a 4 and a 7.
(history; published version)

#7 by Bruno Berselli at Tue Apr 02 03:21:55 EDT 2013

STATUS

proposed

approved

#6 by Michel Marcus at Tue Apr 02 01:52:17 EDT 2013

STATUS

editing

proposed

#5 by Michel Marcus at Tue Apr 02 01:52:12 EDT 2013

NAME

Numbers that are multiples of 28 and conatin contain both a 4 and a 7.

STATUS

approved

editing

#4 by Harvey P. Dale at Fri Jul 27 18:16:45 EDT 2012

STATUS

editing

approved

#3 by Harvey P. Dale at Fri Jul 27 18:16:40 EDT 2012

MATHEMATICA

Select[28*Range[600], DigitCount[#, 10, 4]>0&&DigitCount[#, 10, 7]>0&] (* Harvey P. Dale, Jul 27 2012 *)

STATUS

approved

editing

#2 by Russ Cox at Fri Mar 30 16:51:55 EDT 2012

AUTHOR

_N. J. A. Sloane (njas(AT)research.att.com), _, Sep 06 2010, based on an email from J. Lowell

Discussion

Fri Mar 30

16:51

OEIS Server: https://oeis.org/edit/global/110

#1 by N. J. A. Sloane at Sun Sep 12 03:00:00 EDT 2010

NAME

Numbers that are multiples of 28 and conatin both a 4 and a 7.

DATA

476, 784, 1764, 2744, 3472, 3724, 4172, 4676, 4704, 4732, 4760, 4788, 4872, 5740, 6748, 7084, 7140, 7224, 7364, 7420, 7448, 7476, 7504, 7644, 7784, 7840, 7924, 8764, 9744, 10472, 10724, 11704, 12740, 13748, 14476, 14672, 14700

OFFSET

1,1

COMMENTS

You and your father alternate counting. For every number that is divisible by 4 or contains a 4, substitute "buzz". For every number that is divisible by 7 or contains a 7, substitute "bang". The game is over if a mistake is made.

The sequence is the "Buzz buzz bang bang" sequence, meaning it has the numbers that get 2 buzzes and 2 bangs in this game.

KEYWORD

nonn,base,new

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Sep 06 2010, based on an email from J. Lowell

STATUS

approved