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A122549 From item 6 of Cooijman's Odds test (see example line for an explanation). 0
19, 10, 9, 49, 13, 36, 89, 17, 72 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..9.

Paul Cooijmans, Odds.

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.

CROSSREFS

Sequence in context: A175675 A006232 A260328 * A039942 A269260 A050276

Adjacent sequences:  A122546 A122547 A122548 * A122550 A122551 A122552

KEYWORD

nonn,base

AUTHOR

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

STATUS

approved

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Last modified January 26 10:40 EST 2020. Contains 331279 sequences. (Running on oeis4.)