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A208147 Sequence generated from A089080. 3
1, 2, 6, 12, 48, 96, 288, 576, 2880, 5760, 17280, 34560, 138240, 276480, 829440, 1658880, 9953280, 19906560, 59719680, 119439360, 477757440, 955514880, 2866544640, 5733089280, 28665446400, 57330892800, 171992678400, 343985356800, 1375941427200, 2751882854400 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
FORMULA
a(1) = 1; a(n), n>1 = A089080(n) * a(n-1) with A089080 = (1, 2, 3, 2, 4, 2, 3, 2,...)
a(n) = (2*n-1)!/A067281(2*n-1). - Alois P. Heinz, Dec 11 2023
EXAMPLE
a(5) = 48 = A089080(5) * a(4) = 4 * 12.
CROSSREFS
Sequence in context: A177834 A169858 A292132 * A369330 A152873 A175810
KEYWORD
nonn,easy
AUTHOR
Gary W. Adamson, Feb 23 2012
STATUS
approved

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Last modified February 28 03:01 EST 2024. Contains 370379 sequences. (Running on oeis4.)