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A019437
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a(n) = a(n-1)!/a(n-2)!; a(0) = 1, a(1) = 3.
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1
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1, 3, 6, 120, 9290976268679343135539052852903295259378814351580596958743987989307824385062448596342880785099979140705774497073908459100742234151955724805414557103318958341618000723968000000000000000000000000000
(list; graph; refs; listen; history; internal format)
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