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 A136563 Leftmost column of triangle A136561. 2
 1, 2, 4, -5, 13, -30, 75, -200, 524, -1299, 3038, -6762, 14482, -30162, 61691, -124998, 252744, -512805, 1047661, -2158235, 4481801, -9368303, 19674518, -41437744, 87399483, -184412912, 388975790, -819684340, 1724741941, -3621720214, 7585569484, -15839701483 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Requiring that the absolute values of the differences in the difference triangle only occur at most once each leads to the Zorach additive triangle. (See A035312.) The leftmost column of the Zorach additive triangle is A035311. LINKS Table of n, a(n) for n=1..32. CROSSREFS Cf. A035311, A136561, A136562. Sequence in context: A102992 A273097 A232207 * A127077 A367027 A104549 Adjacent sequences: A136560 A136561 A136562 * A136564 A136565 A136566 KEYWORD sign AUTHOR Leroy Quet, Jan 06 2008 EXTENSIONS More terms from Andrey Zabolotskiy, May 29 2017 STATUS approved

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Last modified September 10 06:17 EDT 2024. Contains 375773 sequences. (Running on oeis4.)