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A359407
Product_{n>=1} (1 + a(n) * x^n) = 1 + Sum_{n>=1} (n * (n + 1) / 2) * x^n.
1
1, 3, 3, 7, -1, -8, -3, 48, 1, -39, -6, 34, -25, -293, 24, 2649, -35, -2104, -239, 3387, 323, -15322, -182, 27551, -2477, -121985, 3663, 275053, -360, -942231, -26801, 8245538, 40690, -7506845, 11479, 19149901, -297030, -61205072, 442870, 158934665, 284075, -490800388, -3338212
OFFSET
1,2
LINKS
CROSSREFS
Sequence in context: A335726 A240504 A338775 * A358191 A235162 A059527
KEYWORD
sign,look
AUTHOR
Seiichi Manyama, Dec 30 2022
STATUS
approved