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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
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.
CROSSREFS
KEYWORD
sign
AUTHOR
Leroy Quet, Jan 06 2008
EXTENSIONS
More terms from Andrey Zabolotskiy, May 29 2017
STATUS
approved