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A084399 Duplicate of A067057. 0
0, 2, 22, 140, 680, 2800, 10304, 34944, 111360, 337920, 985600, 2782208, 7641088 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A105237 A083833 A062180 * A067057 A202738 A123960

Adjacent sequences:  A084396 A084397 A084398 * A084400 A084401 A084402

KEYWORD

dead

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Last modified February 14 11:17 EST 2012. Contains 205623 sequences.