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Search: id:A047022
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A047022 T(n,n), array T given by A047020. +0
1
1, 1, 2, 5, 19, 66, 227, 851, 3164, 11706, 44397, 168814, 641641, 2460264, 9462675, 36434340, 140822588, 545555490, 2116273293, 8226372157, 32029990809, 124856742546, 487360876726, 1904604296103, 7450351584876, 29172240231616 (list; graph; listen)
OFFSET

0,3
CROSSREFS

Adjacent sequences: A047019 A047020 A047021 this_sequence A047023 A047024 A047025

Sequence in context: A062666 A047116 A062122 this_sequence A106873 A014273 A058131

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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