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A054139 T(2n,n), array T as in A054134. 0
1, 4, 18, 97, 570, 3489, 21810, 138044, 881098, 5658793, 36520068, 236619717, 1538134272, 10026366588, 65513185896, 428957025672 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A234854 A334735 A086681 * A370569 A020072 A020027
KEYWORD
nonn
AUTHOR
STATUS
approved

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Last modified March 28 16:28 EDT 2024. Contains 371254 sequences. (Running on oeis4.)