The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A122549

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A122549

From item 6 of Cooijman's Odds test (see example line for an explanation).
(history; published version)

#3 by Charles R Greathouse IV at Tue Nov 23 23:53:35 EST 2010

STATUS

proposed

approved

#2 by Charles R Greathouse IV at Tue Nov 23 23:53:33 EST 2010

KEYWORD

nonn,base

STATUS

approved

proposed

#1 by N. J. A. Sloane at Fri Sep 29 03:00:00 EDT 2006

NAME

From item 6 of Cooijman's Odds test (see example line for an explanation).

DATA

19, 10, 9, 49, 13, 36, 89, 17, 72

OFFSET

1,1

LINKS

Paul Cooijmans, <a href="http://web.archive.org/web/20050302174449/http://members.chello.nl/p.cooijmans/gliaweb/tests/odds.html">Odds</a>.

EXAMPLE

Fill a 3 x 3 matrix line by line from top row at the left with the numbers of the sequence in order:

19 10 9 19 1+9 19-(1+9)

49 13 36 Equivalent to 49 4+9 49-(4+9)

89 17 72 89 8+9 89-(8+9)

So second column elements can be obtained as the sum of digits from the first column of numbers. Third column is the difference between the first two ones.

KEYWORD

nonn,new

AUTHOR

Herman Jamke (hermanjamke(AT)fastmail.fm), Sep 19 2006

STATUS

approved