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A216727
Duplicate of A174075.
1
1, 6, 18, 93, 600, 4320, 35168, 321630, 3257109, 36199458, 438126986, 5736774869
OFFSET
3,2
CROSSREFS
Sequence in context: A294471 A194995 A104970 * A174075 A151470 A280096
KEYWORD
dead
STATUS
approved