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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 June 3 04:09 EDT 2023. Contains 363103 sequences. (Running on oeis4.)