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A054141 T(2n-1,n), array T as in A054134. 0
2, 6, 31, 180, 1101, 6901, 43828, 280664, 1807909, 11698479, 75973701, 494890116, 3231949644, 21153128028, 138712184488 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A153046 A088260 A058028 * A007710 A094639 A113719

Adjacent sequences:  A054138 A054139 A054140 * A054142 A054143 A054144

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 16 08:13 EST 2012. Contains 205893 sequences.